Question 66

If the profit is 20%, then what will be the ratio of cost price to selling price respectively?

Solution

Let C.P. = Rs. $$x$$ and S.P. = Rs. $$y$$

Profit % = $$\frac{(S.P.-C.P.)}{C.P.}\times100$$

=> $$\frac{(y-x)}{x}\times100=20$$

=> $$\frac{(y-x)}{x}=\frac{20}{100}=\frac{1}{5}$$

=> $$5y-5x=x$$

=> $$5y=x+5x=6x$$

=> $$\frac{x}{y}=\frac{5}{6}$$

=> Ans - (B)


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