A person bought pens at 25 for a rupee and sold at 15 for a rupee. What is his profit percentage?
Cost price of 25 pens = Re. 1
=> Cost price of 1 pen = $$Rs.$$ $$\frac{1}{25}$$
Similarly, selling price of 1 pen = $$Rs.$$ $$\frac{1}{15}$$
=> Profit % = $$\frac{(\frac{1}{15}-\frac{1}{25})}{\frac{1}{25}}\times100$$
= $$\frac{2}{75}\times25\times100$$
= $$\frac{200}{3}=66\frac{2}{3}\%$$
=> Ans - (C)
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