Find the rate at which a sum of money will double itself in 3 years, if the interest is compounded annually.

Find the rate at which a sum of money will double itself in 2 years,the interest is compounded annually.

At what rate per cent will a sum of money double itself in 6 years ?

At what rate per cent will a sum of money double itself in 10 years ?

A sum of money doubles itself in 8 years.What is the rate of interest?

A sum of money doubles itself in 8 years. What is the rate of interest?

Determine the rate of inerest for a sum that becomes (343)/(216) times itself in 3 years interest compounded annually.

If a sum of money doubles itself in 8 years at simple interest, the rate percent per annum is____