ECZ 2016 · GCE Paper 1 — Statistics
The median of 2x + 3, x and 2x + 12 is 9, where x is a positive integer. Find the value of x.
- A. 3
- B. 2
- C. 6
- D. 9
Verified working — step 1
The median is the MIDDLE after ordering - so order the three expressions first, using the fact that x is positive.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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