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    Question

    If A : B = 9:7 and A is 10 more than B then find the sum

    of A and B.
    A 80 Correct Answer Incorrect Answer
    B 65 Correct Answer Incorrect Answer
    C 56 Correct Answer Incorrect Answer
    D 78 Correct Answer Incorrect Answer

    Solution

    Let x be the common multiplier. Then, => A : B = 9x : 7x => A = B + 10 => 9x = 7x + 10 => x = 5 A + B = 9x + 7x = 16x = 16 × 5 = 80

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