Question
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?
Answer: Option B
 - 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 = 295 420 x 100 % = 1475 21 % = 70%.
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 - 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 = 295 420 x 100 % = 1475 21 % = 70%.
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