Q2 of 94 Page 142

If the cost price of 12 pens is equal to the selling price of 16 pens, find the loss per cent.

Let × be the CP of Pen


SP of 1 pen = x/16


CP of 1 Pen = x/12


Loss = CP – SP


= x/12 – x/16


= x/48




= 25%


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