A shopkeeper buys a certain number of pens. If the selling price of 5 pens is equal to the cost price of 7 pens, find his profit or loss percentage. Explain!
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Answered by
185
Let the CP of each pen be Rs.x.
Then,
CP of 5 pens=Rs. 5
SP of 5 pens=CP of 7 pnes=Rs. 7
now,gain=SP-CP=Rs.(7-5)=Rs. 2
gain%=gain/cp*100
=(2/5 *100)%= 40%
Hence,the gain=40%.
Then,
CP of 5 pens=Rs. 5
SP of 5 pens=CP of 7 pnes=Rs. 7
now,gain=SP-CP=Rs.(7-5)=Rs. 2
gain%=gain/cp*100
=(2/5 *100)%= 40%
Hence,the gain=40%.
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87
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