MathematicsVariationWAEC
y varies directly as x. If y = 12 when x = 3, find y when x = 5.
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Answer: B. 20
y = kx; k = 12/3 = 4, so y = 4 × 5 = 20.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.
Mathematics · Variation
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