ECZ 2016 · O-Level Paper 2 · Question 11 — Linear Programming
A Health Lobby Group produced a guide to encourage healthy living among the local community. The group produced the guide in two formats: a short video and a printed book. The group needed to decide the number of each format to produce for sale to maximise profit. Let x represent the number of videos produced and y the number of printed books produced.
(a(i)) Write the inequalities which represent each of the following conditions:
(a(i)(a)) the total number of copies produced should not be more than 800,[1]
Verified working — step 1
The total number of copies is x + y.(a(i)(b)) the number of video copies to be at least 100,[1]
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"At least 100" m…(a(i)(c)) the number of printed books to be at least 200.[1]
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"At least 200" m…(a(ii)) Using a scale of 2 cm to represent 100 copies on both axes, draw the x and y axes for 0 ≤ x ≤ 800 and 0 ≤ y ≤ 800 respectively and shade the unwanted region to indicate clearly the region where the solution of the inequalities lie.[4]
Verified working — step 1
Scale 2 cm to 100 copies on both axes, 0 to 800 each way.(a(iii)) The profit on the sale of each video copy is K15.00 while profit on each printed book is K8.00. How many of each type were produced to make maximum profit?[2]
Verified working — step 1
Profit P = 15x + 8y, tested at each vertex.(b) Maphone manufacturing company paid a total dividend of K12 600 000.00 at the end of 2015 on 600 shares.
(b(i)) Calculate the dividend per share.[2]
Verified working — step 1
Dividend per share = total dividendnumber of shares.(b(ii)) Magula owned 200 shares in the company, how much was paid out in dividends to her?[1]
Verified working — step 1
Multiply her shares by the dividend per share.The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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