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    Question

    A woman uses 25% of her salary for house rent, then spends

    20% of the remaining amount on grocery, and 30% of the rest on transportation. She manages to save the remaining amount. If she spent Rs. 270 on transportation, what is the amount she saved?
    A Rs.720 Correct Answer Incorrect Answer
    B Rs.630 Correct Answer Incorrect Answer
    C Rs.550 Correct Answer Incorrect Answer
    D Rs.660 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the salary be Rs. тАШxтАЩ.

    House rent = 0.25 ├Ч x = Rs. 0.25x

    Remaining salary = x тАУ 0.25x = Rs. 0.75x

    Grocery expense = 0.2 ├Ч 0.75x = Rs. 0.15x

    Remaining salary = 0.75x тАУ 0.15x = Rs. 0.6x

    Transportation = 0.3 ├Ч 0.6x = Rs. 0.18x

    ATQ:

    0.18x = 270

    тЗТ x = 1500

    Amount saved = x тАУ (0.25x + 0.15x + 0.18x) = 0.42x

    тЗТ 0.42 ├Ч 1500 = Rs. 630

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