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                                    An article listed at Rs 800 is sold at successive discounts of 25% and 15%. The buyer desires to sell it off at a profit of 20% after allowing a 10% discount. What would be his list price ? (a) Rs 620 (b) Rs 600 (c) Rs 640 (d) Rs 680 | 
                            
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Answer»  (d) Rs 680 M.P = Rs 800 \(\therefore\) C.P. of the buyer = 75% of 85% of Rs 800 = \(\frac{75}{100}\) x \(\frac{85}{100}\)x Rs 800 = Rs 510 Profit = 20% \(\therefore\) S.P. of the buyer = Rs \(\big(\frac{510\times120}{100}\big)\) = Rs 612 Discount = 10% \(\therefore\) List price of the buyer = Rs \(\big(\frac{612\times100}{90}\big)\) = Rs 680.  | 
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