GMAT Compound Interest

Find the amount on $8000 in 9 months at 20% per annum, if the interest being compounded quarterly

Every year an amount increases by 1/8th of itself. How much will it be after two years if its present value is $64000?

Rony borrowed $4000 at 5% p.a compound interest. After 2 years, he repaid $2210 and after 2 more years, the balance with interest. What was the total amount that he paid as interest?

Karin gave Jony $1250 on compound interest for 2 years at 4% per annum. How much loss would Karin have suffered had she given it to Jony for 2 years at 4% per annum simple interest?

In one year, the population, of a village increased by 10% and in the next year, it decreased by 10%. If at the end of 2nd year, the population was 7920, what was it in the beginning?

How much more would $20,000 fetch, after two years, if it is put at 20% p.a. compound interest payable half yearly than if it is put at 20% p.a. compound interest payable yearly?

A money lender lends $2000 for six months at 20% p.a. rate. If the interest is reckoned quarterly, then find the amount given after time limit.

A sum of $1200 amount to $1320 in two years at simple interest. What will be the compound interest on the same sum at the same rate of interest for the same period.

The population of a city increases at the rate of 4% p.a. but there is an additional annual increase of 1% in the population due to some job seekers. The percentage increase in the population after 2 years is

Find the amount on $5000 in 2 years, the rate of interest being 4% per first year and 5% for the second year