A fruit-seller buys x guavas for Rs. y and se | vedclass

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Question

(D) Let the total number of guavas bought be $xy$.Cost Price $(C.P.)$ of $x$ guavas $= Rs. y$.Therefore,$C.P.$ of $xy$ guavas $= xy 	imes \frac{y}{x}

Vedclass · Accepted Answer

$\frac{x^{2}-y^{2}}{y^{2}} 	imes 100 \% 	ext{ gain}$

Vedclass · Answer

(D) Let the total number of guavas bought be $xy$.Cost Price $(C.P.)$ of $x$ guavas $= Rs. y$.Therefore,$C.P.$ of $xy$ guavas $= xy 	imes \frac{y}{x} = y^{2}$.Selling Price $(S.P.)$ of $y$ guavas $= Rs. x$.Therefore,$S.P.$ of $xy$ guavas $= xy 	imes \frac{x}{y} = x^{2}$.Since $x > y$,then $x^{2} > y^{2}$,which implies a gain.Gain $= S.P. - C.P. = x^{2} - y^{2}$.Gain $\% = \left( \frac{	ext{Gain}}{C.P.} ight) 	imes 100 = \left( \frac{x^{2} - y^{2}}{y^{2}} ight) 	imes 100 \%$.

$A$ fruit-seller buys $x$ guavas for $Rs. y$ and sells $y$ guavas for $Rs. x$. If $x > y$,then he made:

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