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Solution . In first case: CP = Rs 6000, Let the 33.33% fraction value be = 1/3 1 = profit 3 = cost price = 3 = 60000 1 = 2000……..(1) 3+1 =4 selling price Therefore , marked up value will be = s.p xc.p = 4 x 2000 = 8000 SP = Rs 6240 Required change in profit = Rs 40
sin2 9 ° + sin2 10 ° + sin2 11 ° + sin2 12 ° + ……… + sin2 81 ° = ?
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