Mathematical Literacy Grade 12 IEB Paper 2 2018 Question Paper

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE EXAMINATION NOVEMBER 2018 MATHEMATICAL LITERACY: PAPER II EXAMINATION NUMBER Time: 3 hours 150 marks PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY 1. This question paper consists of: • 24 pages • 4 questions 2. Please check that your question paper is complete. 3. Answer ALL the questions. 4. Answer on this question paper. 5. It is strongly suggested that all working details be shown. 6. Approved non-programmable calculators may be used in all questions. 7. It is in your own interest to write legibly and to present your work neatly. 8. Maps and diagrams are not necessarily drawn to scale, unless stated otherwise. QUESTION 1 2 3 4 TOTAL MARK TOTAL 35 61 33 21 150 IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 2 of 24 QUESTION 1 1.1 The Kaizer Chiefs football team calls the Moses Mabhida Stadium in Durban their "home base". This means that they do all their practices and home games at this stadium. This beautiful stadium is crowned by an arch that is 106 metres above the ground at its highest point. Tourists can walk or use the "sky car" to get to the top of the arch. [Source: <https://www.mmstadium.com>] 1.1.1 Wikipedia states that the construction costs for this stadium were 3,4 billion South African rand (ZAR) in 2006, which was approximately 450 million American dollars (USD). Determine what the exchange rate was in 2006 and write your answer in the format 1 ZAR = … USD. (4) IEB Copyright © 2018

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 3 of 24 1.1.2 An American family of 5 decides to go up in the sky car. The family consists of 2 parents, 2 children, ages 11 and 14, and one grandparent, age 73. The tariffs for the sky car are as follows: Adults: R60 per person Pensioners (adults 60 years and over): R55 per person Children under 12: R30 per person Children under 6: Free entry Learners on school tour: R30 per person Calculate what it would cost this family to all go up in the sky car. (4) 1.1.3 The current exchange rate is 1 ZAR = 0,08 USD. Determine what the family would be paying for the tickets in USD. (3) IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 4 of 24 1.1.4 Use the exchange rate you calculated in Question 1.1.1 to determine the percentage change in the exchange rate between 2006 and 2018. (4) 1.2 The capacity of the stadium when it is full is 85 000 people and an average ticket to a Kaizer Chiefs game costs R90. If they only managed to sell three quarters of the tickets, calculate the amount of money the stadium loses out on. (4) IEB Copyright © 2018

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 5 of 24 1.3 Kaizer Chiefs has a match on Saturday. The weather forecaster predicts that there is a 30% chance of rain on Friday. If it rains on Friday the chance that it will rain on Saturday is 60%. If it does not rain on Friday the chance that it will rain on Saturday is 20%. 1.3.1 Complete the tree diagram below by using the information above. Give your answer correct to one decimal place where necessary: Friday Saturday 0,6 Rain Rain 0,3 (b) _____ No rain (c) _____ (e) _____________ (a) _____ No rain (d) _____ (f) _____________ (6) 1.3.2 Determine what the probability will be, as a percentage, that it will not rain on Friday or Saturday. (4) IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 6 of 24 1.4 The stadium would like to organise a mini-football tournament for Grade 4 learners from local schools. The stadium's field is 320 m × 280 m. The organisers would like to split this field into mini- fields, with each mini-field measuring 30 m × 15 m. If each mini-field must have its own 5 metre border on all four sides, determine the maximum number of mini-fields they could have. (6) [35] IEB Copyright © 2018

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 7 of 24 QUESTION 2 In the fishing industry, and especially for recreational fishing (fishing for fun), there are some species of fish that have limitations on the size and the number of fish that one may catch per day. The limit in terms of the number of fish that one person may catch daily is called the bag limit. Below is a table of some of the species of fish with their minimum sizes and bag limits. Use this information to answer the questions that follow: Species of fish Min. Bag Common name size limits Anchovies None None Bronze bream (bluefish) 30 cm 2 Cape knifejaw None 5 Galjoen 35 cm 2 Hottentot 22 cm 10 Pinky (piggy) 7,5 cm 10 Scotsman 40 cm 1 [Source: <http://www.daff.gov.za/>] 2.1 If a fisherman does not know the bag limits, which fish would be the safest for him to catch and why? (2) 2.2 The KwaZulu-Natal Parks Board is responsible for ensuring that these limitations on the specific species are adhered to. The Parks Board does this by issuing fines to fishermen who do not abide by these rules. The fine is R500 for the first fish caught that exceeds the bag limit and a further R250 for every fish thereafter. 2.2.1 Write down an equation that will represent the relationship between the number of fish caught over the limit and the cost of the fine. Let C be the total cost of the fine and n the number of fish caught over the bag limit. (5) IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 8 of 24 2.2.2 On the graph paper below draw the graph that represents the cost of fines for the galjoen fish if a maximum of 10 fish are caught. (8) 2.2.3 Use your graph to determine the amount a fisherman would be fined if he caught 7 galjoen. (2) 2.2.4 The fisherman needs to get money to pay his fines. If he sells the 7 fish he caught for R240 each, will he have enough money to pay his fines? Justify your answer with calculations. (3) IEB Copyright © 2018

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Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 10 of 24 2.3 In a paper published in Nature Communications, researchers found that while the quantity of fish caught annually reached its peak in 1996, that peak was much higher than originally thought. Instead of pulling out 86 million tons of fish that year, we actually took 130 million tons of fish out of the oceans. Since then, those numbers have gone down. Officially, the quantity of fish caught globally has declined by 1.2 million tons each year since the 1996 peak, but the paper's authors found that actually, we've only been reducing that massive number by 0.38 million tons per year. [Source: <www.popsci.com>] 2.3.1 Use the figures given to complete the table and then plot a compound bar graph showing the difference between the official quantity of fish caught and the actual quantity of fish caught. QUANTITY OF FISH CAUGHT ANNUALLY (TONNES) YEAR OFFICIAL ACTUAL 1996 86 000 000 130 000 000 1997 1998 1999 2000 IEB Copyright © 2018

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 11 of 24 OFFICIAL VERSUS ACTUAL NUMBER OF FISH CAUGHT 140 130 120 110 100 FISH CAUGHT (MILLIONS OF TONS) 90 80 70 60 50 40 30 20 10 0 1996 1997 1998 1999 2000 YEAR (11) 2.3.2 The U.N. Food and Agriculture Organisation (FAO) reported the following number of fish caught. Number of fish caught Year in millions of tons 2000 95 2001 91 2002 91 2003 87 2004 93 2005 93 2006 90 2007 90 2008 90 2009 89 2010 90 IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 12 of 24 Use the information in the table to calculate the following: (a) The range of fish caught (2) (b) The median amount of fish caught (2) (c) The modal amount of fish caught (2) (d) The mean amount of fish caught (3) IEB Copyright © 2018

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 13 of 24 2.4 A fisherman from Durban decides he wants to go to Richard's Bay to try the fishing there. 2.4.1 Convert the bar scale on the map to a ratio scale in unit form, i.e. 1 : …. (4) IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 14 of 24 2.4.2 Next, determine the approximate distance between Durban and Richard's Bay, which lies NE of Durban. (3) 2.4.3 Refer to the distance table below when answering the following questions: Durban 236 Ladysmith 170 336 Richard's Bay 356 422 195 Sodwana Bay 134 366 303 492 Margate (a) Calculate the difference between the distance calculated in Question 2.4.2 and the distance given in the table. (3) (b) Which do you think is the most accurate, the distance calculated using the bar scale or the distance given in the table? Give a reason for your answer. (2) IEB Copyright © 2018

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 15 of 24 (c) The fisherman travelling from Durban to Richard's Bay only has a quarter of a tank of petrol. The fuel consumption of his car is 12 km/litre and his car has a 50 litre tank. Use the distance table to determine if he has enough petrol to make it to Richard's Bay. (4) (d) If he is travelling at an average speed of 80 km/h, determine how long it will take him to get to Richard's Bay. Write your answer in hours and minutes. (5) [61] IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 16 of 24 QUESTION 3 Levi has decided to build a wooden deck in his garden. The wooden deck will have a step to make it easier to get onto the deck. There is a tree in one of the corners of the deck which Levi wants to keep so he will have to cut a circular hole out of the deck to accommodate it. Strips of wood that The deck has the shape below: the deck is made of IEB Copyright © 2018

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 17 of 24 3.1 Show that the surface area of the wooden deck (the lightly shaded area) is approximately 20 m2. You may use the following formulae: = length × breadth Arearectangle 1 = Area triangle base × perpendicular height 2 Areacircle π × rad = ius2 use π 3,14 = (7) IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 18 of 24 3.2 The circular hole Levi wants to cut out of the deck has a diameter of 300 mm. The circumference of the tree is 0,99 m. Determine with the use of calculations whether the hole will be big enough to accommodate the tree. You may use the following formula: Circumference = π × diameter OR Circumference = 2 × π × radius use π = 3,14 (4) 3.3 The wood for the deck that Levi wants to use is sold in strips of 15 cm × 1,2 m. Levi wants to play it safe and buy enough wood for 21 m2. Determine the minimum number of strips he will have to buy. (5) IEB Copyright © 2018

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 19 of 24 3.4 The strips come in packs of 8 and are sold for R159,90 per pack. Calculate how much it will cost Levi for the wooden strips. Round your answer off to the nearest R5,00. (5) 3.5 Levi decides to put a corner edge around the outside perimeter of the deck to finish the deck off and make it look neater. If he buys 21 m, determine with calculations whether that will be enough. (4) IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 20 of 24 3.6 Levi wants to build the step out of bricks. The dimensions of the bricks he will use are given below. The step should have the following approximate dimensions: length = 1 m, width = 50 cm, height = 15 cm. The diagram below represents the layout of the bricks for the step, as seen from above. Determine the minimum number of bricks Levi will have to buy to build the step. IEB Copyright © 2018

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Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 22 of 24 QUESTION 4 The South African Mint produces, besides the country's currency, collectible gold coins, called Krugerrands. There are four coins of different sizes, according to weight, in the Classic Gold Proof Collection. Below are the coins with their weight, diameter and cost. 32 mm 27 mm 22 mm 16,5 mm R31 600 R14 500 R7 900 R3 800 [Source: <www.samint.co.za>] 4.1 Determine the weight of the one-tenth of an ounce (oz) Krugerrand in grams, given the following: 1 oz = 0,0625 lbs 1 g = 0,0022 lbs (4) IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 23 of 24 4.2 Determine if the ratio of the weight to cost is the same for the one-tenth of an ounce (oz) coin and the 1 ounce Krugerrand. (4) 4.3 Refilwe wants to buy a ¼ oz Krugerrand but does not have enough money now. She decides to deposit the money she has into a savings account with interest that is compounded annually, and leave it there for the next three years. 4.3.1 Refilwe calculates that this bank account will earn her R375 interest in the first year if she deposits R5 000. Determine the interest rate this bank is offering her. Give your answer as a percentage. (3) 4.3.2 Refilwe finds another bank that offers her a better interest rate of 11,5%. Complete the table below: (a) Amount at Interest Amount at end Year beginning of gained of year year Year 1 R5 000 R575 R5 575 Year 2 R5 575 (i) R (ii) R Year 3 (iii) R (iv) R (v) R (5) IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: MATHEMATICAL LITERACY: PAPER II Page 24 of 24 (b) Will Refilwe have saved enough money to buy her coin? Justify your answer. (2) 4.4 The cost of the 1 oz Krugerrand is R31 600 including VAT. If VAT is charged at 15%, determine what the cost of the coin is excluding VAT. Round your answer to the nearest cent. (3) [21] Total: 150 marks IEB Copyright © 2018