a dealer purchased 60 items at rs.150 each. he sold one -third of them at loss 6%. at what price each must he sell the remaining article's so as to gain 10% on the whole deal ?
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Answer: Rs. 2.95
explanation - >
cost of 60 items = Rs. 150
cost of each item = 150/60 = Rs 2.5
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cost of 1/3rd (20 items) = 20 x 2.5 = Rs. 50
6% loss of Rs. 50 = Rs. 3
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remaining items = 40
cost of 40 items = 40 x 2.5 = Rs. 100
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10% on whole deal (Rs.150) = Rs. 15
Hence, selling price of 40 items to have gain = (15+3(loss)) = Rs. 18 is => 100 + 18 = Rs. 118
selling price of 40 items = Rs. 118
selling price of each item = 118/40 = Rs. 2.95
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