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The C.P. of 8 Pens is Same as S.P. of 10 Pens. Calculate the Profit Or Loss Percent Made, If All the Pens Bought Are Considered to Be Sold

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Question

The C.P. of 12 pens is same as S.P. of 15 pens. Calculate the profit or loss percent made, if all the pens bought are considered to be sold.

Sum
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Solution

C.P. of 12 pens = S.P. of 15 pens = Rs. 100 (suppose)

∴ C.P. of 1 pen =`100/12` = Rs. 8.33

and S.P. of 1 pen = `100/15` = Rs. 6.67

∴ Loss = C.P. - S.P. 

= Rs. 8.33 - Rs. 6.67

= Rs. 1.67

Loss % =`("Loss" xx 100)/"C.P."`

`= (1.67 xx 100)/8.33`

`= (166 xx 100 xx 100)/(100 xx 833)`

= 19.93 %

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Concept for Application to Profit and Loss (Single Transaction Only)
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Chapter 10: Profit, Loss and Discount - Exercise 9 (C)

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R.K. Bansal Concise Mathematics [English] Class 7 ICSE
Chapter 10 Profit, Loss and Discount
Exercise 9 (C) | Q 13

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