JAMB Mathematics 2015 Objective — Question 49
Question 49 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2015 Objective paper, with the correct answer and a full explanation.
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Y varies directly as w². When y=8, w=2, find y when w=3.
- A. 18Correct
- B. 6
- C. 9
- D. 12
Explanation
k = y/w² = 8/4 = 2. When w=3, y = 2×9 = 18.
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