Question 186

The cost price of 100 books is equal to the selling price of 60 books. The gain or loss percentage will be :

Solution

Let the cost price of 1 book be Rs C

and the selling Price of 1 book be Rs S

It is given that cost price of 100 books is equal to the selling price of 60 books

So, 100xC = 60xS

S = $$\frac{5}{3}$$ C

So Profit % = $$\frac{SellingPrice-CostPrice}{CostPrice}$$x100

= $$\frac{\frac{5C}{3}-C}{C}$$x100

= $$\frac{2}{3}$$ * 100 = $$66\frac{2}{3}$$ %

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