If the selling price of $\frac{2}{3}$ of a certain quantity of milk be equal to the cost price of whole milk, then what will be the gain percent in this transaction?

A sells a bicycle to $B$ at a profit of $20 \%$ and $B$ sells it to $C$ at a profit of $25 \% .$ If $C$ pays $R s .\,1500,$ what did $A$ pay for it in $RS.$?

The cost price of a table is $Rs.\,3,200.$ A merchant wants to make $25 \%$ profit by selling it. At the time of sale he declares a discount of $20 \%$ on the marked price. The marked price (in $Rs.$) is

Kunal bought a suitcase with $15 \%$ discount on the labelled price. He sold the suitcase for $Rs$ $2880$ with $20 \%$ profit on the labelled price. At what price did he buy the suitcase? (in $Rs.$)

If a company sells a car with a marked price of $Rs$ $272000$ and gives a discount of $4 \%$ on $Rs$ $200000$ and $2.5\%$ on the remaining amount of $Rs$ $72000,$ then the actual price charged by the company for the car is (in $Rs.$)

A man sells two article for $Rs.\,5000$ each neither losing nor gaining in the deal. If he sold one of them at a gain of $25 \%,$ the other article is sold at a loss of.......$\%$