Question

by selling a calculator for rupees 629 a dealer in cause a loss of 15% what was the cost price of the calculator for him
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Answer 1

calculator of selling price = ₹629

                 Loss                 = 15%

Formula of c.p = s.p × 100 ÷ 100 - loss

                        = ₹ 629 × 100 ÷ 100 - 15

cost price of calculator = ₹ (62900 ÷ 85)

                                             ₹ 740