M L Aggarwal Solutions for Exercise 2: EXERCISE 2.2

At what rate percent per annum compound interest would $₹80000$ amount to $₹88200$ in two years, interest being compounded yearly? Also find the amount after $3$ years at the same rate of compound interest.

A certain sum amounts to $₹5292$ in $2$ years and to $₹5556.60$ in $3$ years at compound interest. Find the rate and the sum. 

A sum of money is invested at compound interest payable annually. The interest in two successive years is Rs. $225$and Rs.$240$respectively. Find the rate of interest per annum.

On what sum of money will the difference between the compound interest and simple interest for $2$ years be equal to $₹ 25$ if the  rate of interest charged for both is $5\%$ p.a.? 
 

The difference between compound interest for a year payable half-yearly and simple interest on a certain sum of money lent out at $10\%$ for a year is $₹15.$ Find the sum of money lent out.

Find the difference between compound interest on $Rs 8000$ for $1.5$ years at $10\%$ p.a. when compounded annually and semi-annually.

A sum of money is lent out at compound interest for two years at $20\%$ p.a., CI. being reckoned yearly. If the same sum of money is lent out at compound interest at the same rate percent per annum, C.I. being reckoned half-yearly. it would have fetched $Rs 482$ more by way of interest. Calculate the sum of money lent out.

A sum of money amounts to $Rs 13230$ in one year and to $Rs 13891.50$ in $1.5$ years at compound interest, compounded semi-annually. Find the sum and the rate of interest per annum.