Amit buys $5$ watches for $Rs.\, 9450$ and later sells them for $Rs\,.9700$ How much profit does Amit make per watch in $Rs.$?

Suresh purchased a $TV$ set for $Rs.$ $11250 .$ He spent $Rs.\,800$ on installation and $Rs.$ $150$ on transportation. At what price should it be sold so that the profit earned would have been $15 \%$, if no discount was offered? (in $Rs.$)

A trader sells his table at a profit of $15 \%$ and the chair at a loss of $7 \frac{1}{2} \%,$ but on the whole he gains $Rs.\, 50 .$ If he sells the table at a loss of $7 \frac{1}{2} \%,$ and chair at a profit of $15 \%,$ then he neither gains nor loses. Find the cost price of the table

A shopkeeper sells a badminton racket, whose marked price is $Rs.\, 30$, at a discount of $15 \%$ and gives a shuttle cock costing $Rs.$ $1.50$ free with each racket. Even then he makes a profit of $20\%.$ His cost price per racket is (in $Rs$)

Mr Verma sold his scooter for $Rs.\,10500$ at a gain of $5 \%$. Find out the cost price of the scooter. (in $Rs.$)

If $11$ Mango are bought for $Rs.\, 10$ and sold at $10$ for $Rs.\, 11 .$ What was Gain or Loss $\% ?$