If the cost price of 15 articles is equal to the selling price 10 articles, then the gain percentage is
Let C.P. of 1 article = $$Rs.$$ $$x$$ and S.P. of 1 article = $$Rs.$$ $$y$$
According to ques, => $$15x=10y$$
=> $$\frac{x}{y}=\frac{10}{15}=\frac{2}{3}$$
Let $$x=2$$ and $$y=3$$
$$\therefore$$ Profit % = $$\frac{(y-x)}{x}\times100$$
= $$\frac{(3-2)}{2}\times100=50\%$$
=> Ans - (B)
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