The list price of a book is $Rs. 100$. $A$ dealer sells three such books for $Rs. 274.50$ after allowing a discount at a certain rate. Find the rate of discount in $\%$.

$A$ merchant purchases a wrist watch for $₹ 450$ and fixes its list price in such a way that after allowing a discount of $10 \%$,he earns a profit of $20 \%$. Then the list price (in rupees) of the wrist watch is

$A$ shopkeeper sold an item at $10 \%$ loss after giving a discount equal to half the marked price. The cost price of the item is ......... of the marked price.

$A$ fan costing $Rs. 1200$ is being sold for $Rs. 1500$. What is the profit percent?

$A$ person purchased a saree for $Rs. 7710$ after availing a net discount of $Rs. 1285$. The percentage of discount,the saree shop offers,is

On an order of $5$ dozen boxes of a consumer product,a retailer receives an extra dozen free. This is equivalent to allowing him a discount of........$\%$