Aman buys $5$ laptops and $7$ computers for $Rs.$ $58500 .$ He sells the laptops at a profit of $10 \%$ and computers at a profit of $16 \%$ and his whole gain is $Rs.$ $7110.$ What price does he pay for a laptop? (in $Rs.$)

Rajesh purchased a mobile phone and a refrigerator for $Rs.\, 12000$ and $Rs.\, 10000$ respectively. She sold the refrigerator at a loss of $12$ percent and mobile phone at a profit of $8$ per cent. What is her overall loss$/$profit?

On selling an article for $Rs.\, 500$ the loss incurred is $20 \% .$ To make a profit of $20 \%$ the article must be sold at in $Rs.$?

The profit earned by selling an article for $Rs.\, 900$ is double the loss incurred when the same article is sold for $Rs.$ $450 .$ At what price should the article be sold to make $25 \%$ profit in $Rs.$?

The marked price of a watch was $Rs.\,720.$ A man bought the same for $Rs.\, 550.80$ after getting two successive discounts, the first being $10 \% .$ The second discount rate is.......$\%$

Profit earned by selling an article of $Rs.\, 1630$ is same as the loss incurred by selling the article for $Rs.$ $1320 .$ What is the $CP$ in $Rs$?