A fruit-seller buys $x$ guavas for $Rs.\, y$ and sells $y$ guavas for $Rs.\, x .$ If $x>y,$ then he made
$\frac{x^{2}-y^{2}}{x y} \% \operatorname{loss}$
$\frac{x^{2}-y^{2}}{x y} \%$ gain
$\frac{x^{2}-y^{2}}{y^{2}} \% \operatorname{loss}$
$\frac{x^{2}-y^{2}}{y^{2}} \times 100 \%$ gain
If the $CP$ of $13$ bats is $Rs.$ $390 .$ What is the price in $Rs.$ when it is sold at $10 \%$ loss?
If a company sells a car with a marked price of $Rs$ $272000$ and gives a discount of $4 \%$ on $Rs$ $200000$ and $2.5\%$ on the remaining amount of $Rs$ $72000,$ then the actual price charged by the company for the car is (in $Rs.$)
A sells a bicycle to $B$ at a profit of $20 \%$ and $B$ sells it to $C$ at a profit of $25 \% .$ If $C$ pays $R s .\,1500,$ what did $A$ pay for it in $RS.$?
A man buys a cycle for $Rs$ $1400$ and sells it at a loss of $15 \% .$ What is the selling price of the cycle? (in $Rs.$)
A trader purchase a wrist watch and a pendulum for $Rs.$ $390.$ He sells them making a profit of $10 \%$ on the watch and $15 \%$ on the pendulum. He earns a profit of $Rs$. $51.50 .$ The difference between the original prices of the pendulum and the watch is equal to? (in $Rs.$)