There is a ratio of $5:4$ between two numbers. If $40\%$ of the first number is $12$,then what would be $50\%$ of the second number?

The price of a table depreciates every year by $20 \%$. If the value of the table after $2$ years is $Rs$ $32,000$,then what is the present price (in $Rs$) of the table (in $,000$)?

If $A$'s salary is $50 \%$ more than that of $B$,then $B$'s salary is less than $A$'s by

What percent of Rs. $2650$ is Rs. $1987.50$?

In $2009$,the food production was $5.5$ million tonnes and in $2010$,the production was $4.4$ million tonnes. Find out the percentage decrease in food production in these two years?

The present population of a town is $26010$. It increases annually at the rate of $2\%$. What was the population of the town two years ago?