A shopkeeper purchased $70$ $kg$ of potatoes for $Rs.\, 420$ and sold the whole lot at the rate of $Rs.\, 6.5$ per $kg.$ What will be his gain percent?
$4 \frac{1}{6}$
$6 \frac{1}{4}$
$8 \frac{1}{3}$
$20$
Nutan bought a watch with $24 \%$ discount. If she pays $Rs.\, 779$ for that watch then what is the marked price of watch in $Rs.$?
In these questions, two equations mabered $I$ and $II$ are given. You have to solve both the equations and mark the appropriate option.
$I.$ $2 x^{2}+19 x+45=0$
$II.$ $2 y^{2}+11 y+12=0$
A fan is listed at $Rs.\, 1500$ and a discount of $20 \%$ is offered on the list price. What additional discount must be offered to the customer to bring the net price to $Rs$ $1104 ?$ (in $\%$)
Mohan buys a watch for $Rs.\,350$ and sells it for $Rs.\,392.$ Find out his percentage of profit.
A man buys $10$ articles for $Rs.\, 8$ and sells them at $Rs.\, 1.25$ per article. His gain percent is