Questions

Compound interest on a sum of money for 2 years compounded annually is Rs 1680. Simple interest on the same sum for the same period and at the same rate is Rs 1600.

1.  Find the sum.
2. Find the rate of interest.
3.  In how many years annual compound interest on the same sum at the same rate be Rs 3200?

Compound interest on a sum of money for 2 years compounded annually is Rs 8034. Simple interest on the same sum for the same period and at the same rate is Rs 7800.

1.  Find the sum.
2.  Find the rate of interest.
3.  In how many years annual compound interest on the same sum at the same rate be Rs 15600?

A invested Rs 4500 for 3 years at the rate of 8$\rm \%$ annual compound interest and B invested the same amount for the same time at the rate of per month per rupee 1 paisa simple interest. Calculate,

1.  The interest received by A.
2.  The interest received by B.
3.  Who earned more interest?

Bimal deposits Rs 15000 in Sita Finance company and Rs 15000 in Lumbini Finance company at the rate of 12$\rm \%$ per annum. Sita Finance company pays interest compounded half yearly and Lumbini Finance company pays interest compounded yearly. Calculate the interest paid by,

1.  Sita Finance in 2 years.
2.  Lumbini Finance in 2 years. 
3. As a depositor, which finance is best to earn more interest? 
    

A sum of money amounts to Rs 1800 at the rate of 5$\rm \%$ p.a. simple interest in 10 years 

1. Find the sum. 
2. Find the annual compound amount for 2 years at the same rate of interest.
3.  Calculate quarterly year compound interest for 1 year at the same rate.

The simple interest on a certain sum of money for 2 years at 5$\rm \%$ per annum is Rs 320.

1. Find the principal 
2. What will be the annual compound interest on the same sum at the same rate, the interest being calculated yearly for 2 years?
3.  Find the semi-annual compound interest for 2 years.

If the semi-annual compound interest on Rs 8000 for $1\rm \frac {1}{2}$ years is Rs 2648. 

1. Find the interest rate. 
2. What is the simple interest of the sum at the same rate and time?
3. If the interest rate is reduced to half, then what happens to the simple interest at the same time?

Nikita receives the interest Rs 254.40 at the end of 2 years at 12$\rm \%$ annual compound! interest. If the semi-annual compound interest is allowed.

1. Find the sum. 
2.  Find the semi-annual compound interest. 
3.  How much more interest will she receive?

The annual compound interest on a certain sum of money for 2 years at 4$\rm \%$ is Rs 2448.

1. Find the sum.
2. Find the compound amount.
3. In how many years will the simple interest on the same sum of money at 5$\rm \%$ become Rs 2500?
4.  Find the simple amount of the sum at 5$\rm \%$ at time obtained in (3).

A man deposits a sum of money at the annual rate of interest 10$\rm \%$ and gets the annual compound interest of Rs 1986 after 3 years. 

1. What was the deposited principal? 
2.  What is the simple interest of the sum for 3 years?
3.  Find the difference of the annual compound interest and simple interest. 
4.  By what percent the annual compound interest is more than simple interest?