The simple interest on a sum of money for 2 years is Rs.100 and the compound interest on the same sum at the same rate for the same time is Rs.104.The rate of interest is:

The difference of compound interests on Rs.800 for 1 year at 20% per annum when compound half yearly and quarterly is:

The compound interest on a certain sum of money for 2 years at 10% per annum is Rs.420. The simple interest on the same sum at the same rate and same time will be:

At simple interest, a sum doubles after 20 years. The rate of interest per annum is:

The simple interest on a certain sum for 3 years at 9 1/2 % p.a amounts to Rs.159.60. The sum is:

Rs.800 at 5% per annum compound interest amount to Rs.882 in:

The compound interest on Rs.450 at  per annum for years is:

The compound interest on Rs.1250 for  years at 8 percent per annum, interest payable half yearly is:

 A sum amounts to Rs.1352 in 2 years at 4% compound interest. The sum is: