A man bought nine pens for a rupee. How many pens should be sell for a rupee to gain $50 \% ?$
$3$
$6$
$7$
$8$
Find $SP$ when $C P=R s. \,56 .25$ and $\operatorname{Gain}=20 \% ?$
Profit earned by selling an article of $Rs.\, 1630$ is same as the loss incurred by selling the article for $Rs.$ $1320 .$ What is the $CP$ in $Rs$?
By selling an article for $Rs.\, 21,$ a man lost such that the percentage loss was equal to the cost price. The cost price of the article was (in $Rs.$)
Arun buys one kilogram of apples for $Rs.\, 120$ and sells it to Swati gaining $25 \%$. Swati sells it to Divya who again sells it for $Rs.\, 198,$ making a profit of $10 \%$. What is the profit percentage made by Swati?
A shopkeeper listed the price of goods at $30 \%$ above the cost price. He sells half the stock at this price, one fourth of the stock at a discount of $15 \%$ and the remaining at $30 \%$ discount. His overall profit is.......$\%$