At any rate of simple interest given Principal and compounding for a period of time Is in the ratio of 4: 5. Same after 3 years Ratio of principal to principal at the rate of interest It becomes 5: 7. What will be 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____

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

If the ratio of principal and annual interest is 4:1, then rate of interest is

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

The simple interest on a principal is one-fifth of the given principal at the end of five years. What is the rate of interest per annum?

If the ratio of the principal and amount (principal + interest) is 20 : 21, then the rate of interest per annum is