WAEC Mathematics 2023 Objective — Question 10
Question 10 of 50 from the West African Examinations Council (WAEC) Mathematics 2023 Objective paper, with the correct answer and a full explanation.
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M varies jointly as the square of n and square root of q. If M=24 when n=2 and q=4, find M when n=5 and q=9.
- A. 288
- B. 400
- C. 300
- D. 225Correct
Explanation
M=kn²√q. 24=k(4)(2) → k=3. When n=5,q=9: M=3(25)(3)=225.
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