$A$ man loses $20 \%$ of his money. After spending $25 \%$ of the remainder,he has $Rs. 480$ left. What is the amount of money he originally had?

On decreasing the price of a colour $TV$ by $30 \%$,its sale is increased by $20 \%$. The effect on the revenue is:

$A$ salesman is allowed $5 \frac{1}{2} \%$ discount on the total sales made by him plus a bonus of $\frac{1}{2} \%$ on the sales made over $₹ 10000$. If his total earnings are $₹ 1990$,find the total sales.

$A$ sum of $₹ 731$ is distributed among $A$,$B$,and $C$,such that $A$ receives $25\%$ more than $B$ and $B$ receives $25\%$ less than $C$. What is $C$'s share in the amount?

The price of onions has been increased by $50 \%$. In order to keep the expenditure on onions the same,the percentage of reduction in consumption has to be:

Water tax is increased by $20 \%$ but its consumption is decreased by $20 \% .$ Then the increase or decrease in the expenditure of the money is