Simple and Compound Interest, Stock

An amount of money is invested in a savings account for two years. It increased by Tk. 52.50 in two years. after annual compounding at the rate of 10% per year. What is the amount invested initially?

P charges at 7% p.a. simple interest to Q and R and lends a certain sum to R and Tk. 2,500 to Q. After 4 years, P completely receives Tk. 1,120 as interest from Q and R. Find the sum lent to R?

The difference between simple and compound interest at 5% annually on a sum of TK. 10000 at the end of 2 years -

If a principal P becomes Q in 2 years when interest R% is compounded half-yearly. And if the same principal P becomes Q in 2 years when interest S% is compound annually, then which of the following is true.

Tk. 6000 becomes Tk. 7200 in 4 years at a certain rate of simple interest. If the rate becomes 1.5 times of itself, the amount of same principal in 5 years will be -

A man deposits Tk 600 in a Bank at 10% interest rate compounded annually. At the end of the second year, the total amount including interest will become Tk-

Bilkis invests Tk. 2,400 in the XYZ Bank at 5%. How much additional money must she invest at 8% so that the total annual income will be equal to 6% of her entire investment?

A sum fetches a simple interest of Tk. 6000 at the rate of 5% p.a. in 6 years. What would be the compound interest earned at the same rate of interest and the same principal in 2 years?

Find the compound interest at the rate of 10% per annum for four years on the principal which in four years at the rate of 4% per annum gives Tk. 1600 as simple interest.

The interest charged on a loan is p dollars per $1,000 for the first month and q dollars per $1000 for each month after the first month. How much interest will be charged during the first three months on a loan of $10,000?

The simple interest on a sum of money at 8% per annum for 6 years is half the sum. the sum is-

Ahsan borrows 2,500 taka from a Leasing Company at 4.5% compound interest per year. Calculate the total must be paid after 36 months?

The simple interest received on a sum of money at the end of 10 years is two times of the principal. At the same rate of interest, what would be the ratio of principal and compound interest received at the end of two years?

Mr. Johan pays income tax on the sum above $3000 at a rate of 6 cents per Dollar. If he has $4880 after paying the income tax. what is john's gross income?

A sum of money placed at compound interest doubles itself in 4 years. In how many years will it amount of 8 times itself?

The difference in taka between simple and compound interest at 5% annually on a sum of Tk. 5000 after 2 years is –

If the ratio of simple interest and principal is 8 : 25/2 and rate of interest is equal to the time invested then find the time of investment?

A certain amount of money earning simple interest becomes 7/5th of the initial amount in 4 years. What is the interest rate?

কোনো আসল ৩ বছরে মুনাফাসহ ৫৫০০ টাকা হয় । মুনাফা আসলের ৩/৮ অংশ হলে মুনাফার হার কত?

A sum of money amounts to Tk 9800 after 5 years and Tk. 12005. after 8 years at the same rate of simple interest. The rate of interest per annum is -