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    Question

    80% of a number is the same as 64% of another number. If

    their combined value is 360, find the difference of the numbers.
    A 45 Correct Answer Incorrect Answer
    B 40 Correct Answer Incorrect Answer
    C 50 Correct Answer Incorrect Answer
    D 33 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the numbers be ‘x’ and ‘y’ respectively.

    According to the question,

    ⇒ 0.80x = 0.64y

    ⇒ x/y = 0.64 / 0.80 = 4/5

    So the numbers are in the ratio 4 : 5

    Sum of the numbers = 4 + 5 = 9 units = 360

    ⇒ 1 unit = 360 ÷ 9 = 40

    ⇒ Difference = (5 – 4) units = 1 unit = 40

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