Paper 2 · Consumer Arithmetic

Mrs. Shoko decides to erect a durawall around her rectangular stand measuring 20 m by 11 m. Three metres are to be left for a gate. (a) Find the perimeter of the durawall. [3] She has two options, A or B, to consider for erecting the durawall. Option A: She could engage a contractor who charges $12 per metre on a fix-and-supply basis. (b) Calculate the total cost of erecting the durawall using option A. [2] Option B: She could buy the following materials as shown in the table below and engage a builder who charges$100 for the job. Materials: bricks, 5 000, $80.00 for 1 000; cement, 10 x 50 kg bag,$10 per bag; brick force, 5 bundles, $5 per bundle; pit sand, 2 loads,$30 per load. (c) Calculate the total cost of erecting the durawall using option B. [3] (d) Mrs. Shoko decides to use the cheaper option. Calculate the amount she saves by using that option. [2]

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ZIMSEC Mathematics 4008/2, November 2014, Q5, via the Topical Collection