ECZ 2016 · O-Level Paper 1 — Variation
Using w = 5x²⁄y, find the value of y when x = 8 and w = 20.
- A. 160
- B. 4
- C. 16
- D. 32
Verified working — step 1
Now y is the unknown, sitting in the denominator. Substitute, then rearrange.The full step-by-step working and final answer, plus the video lesson for this topic, 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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