ECZ 2026 · GCE Paper 1 — Variation

P varies as q and inversely as the square of r, and when p = 6, q = 18 and r = 3. Find the value of k, the constant of variation.

Verified working — step 1

Turn the words into a formula before touching any numbers: "varies as q" puts q on top; "inversely as the square of r" puts r² underneath.

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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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