Question

    If A varies directly as B and inversely as C and A = 6,

    B = 3 and C = 5, what is the value of A when B = 5 and C = 2?
    A 25 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 30 Correct Answer Incorrect Answer
    D 16 Correct Answer Incorrect Answer

    Solution

    Let the constant be x, According to the question, => A = x × B/C => 6 = x × 3/5 => x = 10 Now putting the value of A, => A = 10 × (5/2)               => A = 25

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