A man sold two watches for $Rs.\,3750$ each. On one he gained $5 \%,$ and on the other, he lost $5 \% .$ What was his total gain or loss percentage$?$

Ram purchases a chair at $Rs.\, 70$ and spent $Rs$. $17$ on its repair and $50$ paise on cartage. If he sold the chair at $Rs.\, 100$ then his approximate margin of profit in $\%$ will be?

A man purchased $150$ pens at the rate of $Rs.\, 12$ per pen. He sold 50 pens at gain of $10 \% .$ The percentage gain at which he must sell the remaining pens so as to gain $15 \%$ on the whole outlay is……..$\%$

A person sells two articles, each for $Rs.\,1040.$ He incurs $20 \%$ loss on the first and $10 \%$ loss on the second. Find out overall percent loss.

A shopkeeper allows a discount of $12.5 \%$ on the marked price of a certain article and makes a profit of $20 \% .$ If the article costs the shopkeeper $Rs. 210$, then the marked price of the article will be (in $Rs.$)