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    Question

    The ratio of number of balls in bags A & B is 3:4.

    Seven Balls are taken from bag B and are dropped in bag A, number of balls are equal in each bag now. Number of balls in each bag now is
    A 56 Correct Answer Incorrect Answer
    B 81 Correct Answer Incorrect Answer
    C 64 Correct Answer Incorrect Answer
    D 25 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

                                       A                      B Number of balls         3          :            4 Let bag A have 3x balls and bag B have 4x balls Now 7 balls are taken out of bag ‘B’ and put in bag ‘A’ (3x+7)/(4x-7) = 1/1 3x+7=4x-7  x = 14 Bag A = 3 × 14 + 7 = 49 Bag B = 4 × 14 – 7 = 49

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