$APD$ printed $3000$ copies of 'Career Power' at a cost of $Rs.$ $240000 .$ It gave $500$ copies free to different philanthropic institutions. It allowed a discount of $25 \%$ on the published price and gave one copy free for every $25$ copies bought at a time. It was able to sell all the copies in this manner. If the published price is $Rs.$ $325,$ then what is its overall gain or loss percentage in the whole transaction?

A cloth merchant sold half of his cloth at $20 \%$ profit, half of the remaining at $20 \%$ loss and the rest was sold at the cost price. In the total transaction, his gain or loss will be

If the cost price is $96 \%$ of the selling price, then what is the profit percent?

If the cost price of $21$ watches is equal to the selling price of $18$ pieces, then what would be the gain percent in this transaction?

Suresh buys a camera for $Rs.\,1800$ and sells it at $10 \%$ loss. Find out its selling price. (in $Rs.$)

When Ram sold his book for $Rs.\, 255$ he made a loss of $15\%.$ For how much he should have sold it if he wanted to make a profit of $5 \% ?$