A rice trader buys $8$ quintals of rice for $Rs.\, 3,600,10 \%$ rice is lost in transportation. At what rate should he sell to earn $15 \%$ profit in $Rs.$ per quintal ?

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

A dairyman pays $Rs.\, 6.40$ per litre of milk. He adds water and sells the mixture at $Rs.\, 8$ per litre, thereby making $37.5\%$ profit. The proportion of water to milk received by the customers is

A sells an article to $B$ making a profit of $\frac{1}{5}^{t h}$ his outlay. $B$ sells it to $C,$ gaining $20 \%$. If $C$ sells it for $Rs.\, 600$ and incurs a loss of $\frac{1}{6}^{t h}$ his outlay, the cost price of $A$ is (in $Rs.$)

A shopkeeper sells goods at $10 \%$ loss on cost price, but uses $20 \%$ less weight. What is his profit or loss percentage?

Abhishek purchased $140$ shirts and $250$ trousers at $Rs.\, 450$ and at $Rs.\, 550$ respectively. What should be the overall average selling price of shirts and trousers so that $40 \%$ profit is earned? (in $Rs.$)

(rounded off to next integer)