The compound interest on 12000 for 9 months at 20 % per annum , interest being compounded quarterly is 

There is 80% increase in amount in 5 years at simple interest. What will be the compound interest of Rs. 20,000 after 3 years at the same rate?

Rahul plans to buy a scooter for his sister for which he saves Rs. 15625 at the start of every year for 3 year. If the rate of CI is 4% pa. then amount at which he plans to buy the scooter is (in Rs.)

A woman invests Rs. 2000 at the start of each year at 5% compound interest per annum. How much will her investment be at the end of the 2^nd year?

A man invested a certain sum in scheme A at 15% p.a. for 2 years and earned Rs 1950 as simple interest. He increased his sum by Rs. ‘x’ and invested in another scheme B at 10% p.a. C.I. for 2 years and received Rs. 1680 as compound interest. Find the value of ‘x’. 

A sum of money becomes eight times in 3 years, if the rate is compounded annually. In how much time will the amount at the same compound rate become sixteen times? 

The compound interest on a certain sum of money invested for 2 years at 5 % per annum is Rs. 328. The simple interest on the sum, at the same rate and for the same period will be 

What will be the compound interest (nearest to Rs. 1 on a sum of Rs. 25,000 for 2 years at 12% p.a., if the interest is compounded 8-monthly?