A sum of money doubles itself in 4 years compound interest. It will amount to 8 times itself at the same rate of interest is -

A sum of money becomes eight times of itself in 3 years at compound interest. The rate of interest per annum is 

If the interest is compounded half yearly, then interest on Rs.16000 at 5% per annum, at the end of $$ {{1}{1\over 2}}$$ years is.

₹26100 is divided between Mohan and Shyam so that the interest that Mohan receives in 3 years is the same as that Shyam receives in 6 years. If the interest rate of 4% per annum then Mohan's share is :

Mr. Rajesh invested Rs.25000 in two fixed deposits X and Y offering compound interest at 6% per annum and 8% per annum, respectively. If the total amount of interest accrued in two years through both fixed deposits is Rs.3518, then the amount invested in scheme X is -

A sum of money doubles itself at compound interest in 15 years. In how many years it  will become eight times?

The compound interest on Rs. 8,000 at 15% per annum for 2 years 4 months, compounded annually is:

A sum of money becomes double in 3 years at compound interest compounded annually at the same rate. In how many years will it become four times of itself?