ECZ 2013 · O-Level Paper 2 · Question 1 — Algebra

Question from ECZ 2013 · O-Level Paper 2 · Question 1

(a) Evaluate 2 58 - 2 16 ÷ 1 112.[2]

Verified working — step 1

Convert to improper fractions: 2 16 = 136 and 1 112 = 1312.

(b) Express 0.041 as a percentage.[1]

Verified working — step 1

Multiply by 100 to turn a decimal into a percentage.

(c) Factorise completely 3y² - 12.[2]

Verified working — step 1

Take out the common factor 3 first.

(d) Mrs Maketiya sold a pair of shoes at K220.00. She made a profit of 10%. Calculate the cost of the shoes.[3]

Verified working — step 1

A 10% profit makes the selling price 110% of the cost.

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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