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1). 20%2). 17%3). 21½%4). 25% |
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Answer» TOTAL C.P of 120 chalks = 120 × 10 = 1200 Now total C.P of 60 chalks = 600 S.P = C.P + profit S.P = 600 + 15 × 600/100 S.P = 600 + 90 = 690 Now for a total gain of 20%, Total S.P = 1200 + 20% of 1200 Total S.P = 1200 + 20/100 of 1200 Total S.P = 1200 + 240 = 1440 60 chalks are sold at S.P of 690 Hence so as to make a overall gain of 20%, S.P of remaining 60 chalks should be = (1440 – 690) = 750 Hence profit made on other 60 chalks = 750 – 600 = 150 % gain = 150 × 100/600 = 25% |
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