The marked price of a bed is $Rs. 2400$ .The shopkeeper gives successive discounts of $10 \%$ and $X \%$ to customer. If the customer pays $Rs.\, 1836$ for's the bed then find the value of $X$ in $\%$?
$15$
$18$
$12$
$10$
A fruitseller sells mangoes at the rate of $Rs.\, 9$ per $kg$ and thereby loses $20 \% .$ At what price per kg he should have sold them to make a profit of $5 \% ?$ (in $Rs.$)
A person sells $36$ oranges per $Rs.\, 1$ and makes a loss of $4 \% .$ Find how many oranges per $Rs$ to be sold to have a gain of $8 \% ?$
The cash difference between the selling price of an article at a profit of $4 \%$ and $6 \%$ is $Rs.$ $3 .$ The ratio of the $2$ selling price is?
By selling a book for $Rs.$ $360,20 \%$ profit was earned. What is the $CP$ of the book in $Rs.$?
The cost price of $6$ pens is equal to the selling price of $4$ pens. Find the profit percent.