The cost price of 10pens is equal to the selling price of 15 pens.find the loss or gain percent.
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profit
p is 10rps
p % is =p/cp × 100
5/10 × 100 and profit % is = 50rps
p is 10rps
p % is =p/cp × 100
5/10 × 100 and profit % is = 50rps
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