New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A commodity's price rises by 32%, and as a result, a

    person reduces their consumption by 15%. What is the overall change (percentage increase or decrease) in their total expenditure?
    A 18.4% Correct Answer Incorrect Answer
    B 12.2% Correct Answer Incorrect Answer
    C 16.8% Correct Answer Incorrect Answer
    D 8.5% Correct Answer Incorrect Answer

    Solution

    Let original amount of the commodity bought by the person be ‘x’ unit and price of that commodity be Rs. ‘y’ per unit Initial expenditure = Rs. xy Now, increased price = Rs. 1.32y Decreased consumption = 0.85x New expenditure = 1.32y × 0.85x = Rs. 1.122xy Required percentage = {(1.122xy – xy)/xy} × 100 = 12.2%

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