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-

A principal becomes twice its amount in 20 years at a certain rate of simple interest. At the same rate of simple interest, that principal becomes thrice of its amount in

A principal becomes twice of its amount in 20 yrs at a certain rate of simple interest. At the same rate of simple interest,that principal becomes thrice of its amount in

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 certain principal amounts Rs2750 in 2 years at a rate of simple interest of 5% per annum. Then find the rate of simple interest in percent per annum for which the principal amounts Rs3000 in 2 years.

With a given rate of simple interest, the ratio of principal and amount for a certain period of time is 4 : 5. After 3 years, with the same rate of interest, the ratio of the principal and amount becomes 5: 7. The rate of interest per annum is

With a given rate of simple inerest, the ratio of principal and amount for a certain period of time is 4 : 5. After 3 years, with the same rate of interest, the ratio of the principal and amount becomes 5 : 7. The rate of interest is

A principal sum of money amounts to 41/40 of itself in 1/4 years simple interest. Find the rate of interest.

With a given rate of simple interest, the ratio of principal and amount for a certain period of time is 4 : 5. After 3 years, with same rate of interest, the ratio of the principal and amount becomes 5 : 7. The rate of interest is____