If principal amounts double in `10` years, then the rate of yearly simple interest is

If the principal is double in ten years, then the rate of simple interest per annum is

A principal amounta double in 20 years at a certain rate of simple interest. At the same rate of interest the principal amounts triple in-

If a principal becomes twice of it in 10 years then the rate of simple interest is ______

Fill in the blanks If the ratio between principal and amount in 1 year is 8:9, then the rate of simple interest per annum is_____.

The total interest of any principal is Rsx in x years at the rate of yearly simple interest x% . Then the principal is

The total interest of a principal of Rs2000 in 18 months at the rate of yearly simple interest 6% is

A sum amounts double in 8 years by simple interest. Then the rate of simple interest p.a. is

If ratio of principal and simple interest for 1 year is 25 : 1, then the rate of interest is

The ratio of the principal and the amount (principal along with interest) in 1 year is 8:9 , the rate of simple interest per annum is __________.

The ratio of the principal and the amoun (principal along with interest) in 1 year is 7:8 , the rate of simple interest per annum is _____________ .