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                                    A shopkeeper marks his goods at 20% above the cost price. He sells three - fourths of his goods at the marked price. He sells the remaining goods at 50% of the marked price. Determine his profit per cent on the whole transaction. (a) 10% (b) 8% (c) 5% (d) 7% | 
                            
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Answer»  (c) 5% Let the C.P. = Rs 100. Then, M.P. = Rs 120 S.P of \(\frac{3}{4}\)th of goods = \(\frac{3}{4}\) x Rs 120 = Rs 90 S.P. of remaining \(\frac{1}{4}\)th of goods = \(\frac{50}{100}\)x \(\frac{1}{4}\) x Rs 120 =Rs 15 \(\therefore\) Total S.P. = Rs 90 + Rs 15 = Rs 105 \(\therefore\) Gain = Rs 105 – Rs 100 = Rs 5, i.e., Gain% = 5%  | 
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