R. S. Aggarwal Solutions for Chapter: Compound Interest, Exercise 2: Exercise

The annual rate of compound interest, by which a sum of money becomes $\frac{125}{64}$ times of itself in three years, is:

What would be the compound interest obtained on an amount of $₹4,000$ at the rate of $5\%$ per annum after $3\mathrm{yr} ?$

In how many years will a sum of $\mathrm{Rs}.800$ at $10\%$ per annum compound interest, compounded semi-annually becomes $\mathrm{Rs}.926.10$?

A man deposited a total sum of $₹88400$ in the name of his two sons aged $19$ and $17$ years so that at the age of $21$, both will get equal amounts. If the money is invested at the rate of $10\%$ compound interest per annum what are the shares of his two sons?

A sum of money was invested for $14$years in Scheme A, which offered simple interest at a rate of $8\%$ p.a. The amount received from Scheme A after $14$years was then invested for two years in Scheme B, which offers compound interest (compounded annual) at a rate of $10\%$pa. If the interest received from Scheme B was Rs. $6678$, what was the sum invested in Scheme A?

Puneeta borrowed from Reena a certain sum for two years at simple interest. Puneeta lent this sum to Venu at the same rate for two years at compound interest. At the end of two years, she received $Rs.110$ as compound interest but paid $Rs.100$ as simple interest. Find the sum and rate of interest.