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    Question

    70% of one number is equal to 50% of another number. If

    the sum of both numbers is 420, find the difference between them.
    A 84 Correct Answer Incorrect Answer
    B 35 Correct Answer Incorrect Answer
    C 70 Correct Answer Incorrect Answer
    D 32 Correct Answer Incorrect Answer

    Solution

    Let the numbers be ‘x’ and ‘y’ respectively According to the question, 0.70x = 0.50y Or, x/y = 5/7 Therefore, (5 + 7) units = 420 Or, 1 unit = 35 Therefore, difference = 7 – 5 = 2 units = 70

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