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    Question

    Rahul saves 36% of his monthly income. If his monthly

    income increases by 18.2% while his monthly savings remain the same, find the increase in his monthly expenditure.
    A 28.44% Correct Answer Incorrect Answer
    B 63.33% Correct Answer Incorrect Answer
    C 35.35% Correct Answer Incorrect Answer
    D 43.44% Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the monthly income of Rahul be Rs. 100x.

    So, monthly savings of Rahul = 0.36 × 100x = Rs. 36x

    Monthly expenditure of Rahul = 100x – 36x = Rs. 64x

    Monthly income of Rahul after increase = 1.182 × 100x = Rs. 118.2x

    Monthly expenditure of Rahul after increase = 118.2x – 36x = 82.2x

    Desired percentage = [(82.2x – 64x)/64x] × 100 = 28.44%

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