A fruit-seller buys $x$ guavas for $Rs.\, y$ and sells $y$ guavas for $Rs.\, x .$ If $x>y,$ then he made
A fruit-seller buys $x$ guavas for $Rs.\, y$ and sells $y$ guavas for $Rs.\, x .$ If $x>y,$ then he made
- A
$\frac{x^{2}-y^{2}}{x y} \% \operatorname{loss}$
- B
$\frac{x^{2}-y^{2}}{x y} \%$ gain
- C
$\frac{x^{2}-y^{2}}{y^{2}} \% \operatorname{loss}$
- D
$\frac{x^{2}-y^{2}}{y^{2}} \times 100 \%$ gain
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