4.
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In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?
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A.
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30%
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B.
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70%
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C.
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100%
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D.
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250%
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Answer: Option B
Explanation:
Let C.P.= Rs. 100. Then, Profit = Rs. 320, S.P. = Rs. 420.
New C.P. = 125% of Rs. 100 = Rs. 125
New S.P. = Rs. 420.
Profit = Rs. (420 - 125) = Rs. 295.
Required percentage =
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295
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x 100
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%
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=
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1475
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% = 70% (approximately).
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420
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21
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