at what rate of simple interest will `Rs. 350` amount `Rs. 455` in 6 years?

At what rate per cent per annum simple interest will Rs. 66000 amount to Rs. 72720 in 2 years?

A certain amount is invested in a scheme of simple interest. It amounts to Rs 3096 in 6 years and Rs 3744 in 9 years. What is the rate of interest (in percentage)?

At what rate per cent of simple interest will the interest on Rs. 3,750 be one-fifth of itself in 4 years? To what will it amount in 15 years ?

A certain amount is invested in a scheme of simple interest. It amounts to Rs 3600 in 5 years and Rs 4560 in 8 years. What is the rate of interest (in percentage)?

The difference between the compound interest and simple interest for the amount Rs. 5,000 in 2 years is Rs.32. The rate of interest is

There is 60% increase in an amount in 6 years at the rate of simple interest. What will be the compound interest of Rs. 12,000 after 3 years at the same rate ?

If a certain sum of money at simple interest amounts to Rs. 5184 in 2 years and to Rs. 5832 in 3 years, what is the sum and the rate of interest?

There is a 50% increase in an amount in 5 years at certain rate of simple interest. What will be the compound interest of Rs. 15000 for 2 years at the same rate?