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                                    What is more favourable for a buyer — A discount series of 20%, 15% and 10% or a discount series of 25%, 12% and 8% ? (a) First (b) Second (c) Both first and second (d) None | 
                            
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Answer»  (b) Second Let the marked price = Rs 100 S.P. for the 1st discount series = \(\frac{80}{100}\) x \(\frac{85}{100}\)x \(\frac{90}{100}\) x 100 = Rs 61.20 S.P. for the 2nd discount series = \(\frac{75}{100}\) x \(\frac{88}{100}\) x \(\frac{92}{100}\) x 100 = Rs 60.72 \(\therefore\) The second discount series is more favourable.  | 
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