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    Question

    The profit of a business increased by Rs. 300. If the old

    profit was 30% less than the new profit, then the old profit was:
    A Rs.550 Correct Answer Incorrect Answer
    B Rs.700 Correct Answer Incorrect Answer
    C Rs.500 Correct Answer Incorrect Answer
    D Rs.200 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the new profit of the business be Rs. '100x'

    So, old profit of the business = 100x × 0.7 = Rs. '70x'

    So, 100x - 70x = 300

    So, 30x = 300

    So, x = 10

    So, old profit of the business = 10 × 70 = Rs. 700

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