A man sells an article at a loss of $5 \% .$ If he had bought it at $20 \%$ more and sold it for $Rs.\,115$ less, he would have made a loss of $40 \% .$ Find the cost price of the article.

A manufacturer sells an article to a wholesale dealer at a profit of $20 \%$. The wholesale dealer sells it to a retail merchant at a loss of $5 \% .$ Find out the resultant profit or loss.

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 $Rs.$)

A shopkeeper sells sugar in such a way that the selling price of $950$ $g$ of sugar is the same as the cost price of $1\, Kg$ of sugar. What is his gain percent?

A man bought some fruits at the rate of $16$ for $Rs. 24$ and sold them at the rate of $8$ for $Rs$ $18.$ What is the profit percent? 

The marked price of a tape recorder is $Rs.\, 12,600$. A festival discount of $5 \%$ is allowed on it. Further for cash payment, a second discount of $2 \%$ is given. The cash payment, in rupees, is to be made for buying it is