R S Aggarwal Solutions for Chapter: Compound Interest, Exercise 4: EXERCISE

The present population of a town is $24000$. If it increases at a rate of $5\%$ per annum. What will be the population after $2$ years.

The value of machine depreciates at the rate of $10\%$ per annum. It was purchased $3$ years ago for $₹60000$. What is th present value of the machine.

The value of machine depreciates at the rate of $20\%$ per annum. It was purchased $2$ years ago for $₹40000$. What is th present value of the machine.

The annual rate of growth in population of a town is $10\%$. If its present population $33275$, what was it $3$ years ago?

If the simple interest on a sum of money at $5\%$ per annum for $3$ years is $₹1200$ then the compound interest on the same sum for the same period at the same rate will be

If the compound interest on a sum for $2$ years and $12.5\%$ per annum is $₹510$, the simple interest on the same sum at the same rate for the same period of time is

The sum that amounts to $₹4913$ in $3$ years at $6.25 \%$ per annum compound annually, is

At what rate per cent per annum will a sum of $₹7500$ amount to $₹8427$ in $2$ years, compounded annually?