Question

    A varies directly as (B + 18) and A = 108 when B = 36.

    Find the value of A when B = 68.
    A 75 Correct Answer Incorrect Answer
    B 86 Correct Answer Incorrect Answer
    C 127 Correct Answer Incorrect Answer
    D 172 Correct Answer Incorrect Answer

    Solution

    A = k (B + 18) 108 = k (36 + 18) k = 108/54   = 2 A = 2x (68+ 18) =2 x 86 = 172

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