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    Question

    What number should be deducted from 45 and 30 so that their

    new ratio becomes 4:3?
    A 14 Correct Answer Incorrect Answer
    B 17 Correct Answer Incorrect Answer
    C 15 Correct Answer Incorrect Answer
    D 25 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the required number be 'y'.

    ATQ,

    (45 - y) : (30 - y) = 4 : 3

    Or, 3 × (45 - y) = 4 × (30 - y)

    Or, 135 - 3y = 120 - 4y

    Or, y = 15

    So, y = 15

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