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2014-06-13T16:50:40+05:30

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Let cp of 1 dozen pencil = x Sp of 1 dozen pencil =15 Loss = 1/6 of x = x/6 Now loss +cp = sp => x/6 +x= 15 => 7x = 90 => x= 90/7 now when profit = 50% , sp = cp + Profit => sp = 90/7+ 50% of 90/6 = 90/7+ 45/7 =135/7
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