On a certain amount of money at a certain rate of interest at a certain time the ratio of principal and compound money is 4 : 7...

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 certain sum of money amounts to Rs 15900 at simple rate of interest at 6% p.a in 1 years . What is the value of principal sum ?

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

CI and SI for a certain sum at a certain rate of interest are ₹ 220 and ₹ 200 in two years . What is the principal for these interests?