The marked price of an article is $20 \%$ more than its cost price. If $5 \%$ discount is given on the marked price,what is the profit percent (in $\%$)?

If after giving a discount of $18 \%$,a book is sold for $Rs. 1599$,what will be the marked price (in $Rs.$) of the book?

$A$ has to pay $Rs. 220$ to $B$ after $1$ year. $B$ asks $A$ to pay $Rs. 110$ in cash and defers the payment of the remaining $Rs. 110$ for $2$ years. $A$ agrees to it. Counting the rate of interest at $10\%$ per annum in this new mode of payment,which of the following is true?

The $T.D.$ on $Rs. 936$ due after a certain time at $8\%$ per annum is $Rs. 36$. The money is due after (in months):

The banker's gain of a certain sum due $2$ $years$ hence at $12 \frac{1}{2} \%$ per annum is $Rs.\,36$. The present worth is (in $Rs.$)

$A$ retailer gets a discount of $40 \%$ on the printed price of an article. The retailer sells it at the printed price. His gain percent is