The amount of ₹ a in 20 years at the rate of simple interest of a % per annum is ………………

The amount of Rs 2p in t years at the rate of simple interest of (r )/(2)% per annum is Rs(2p+_________) .

The amount of Rs2p in n years at the rate of simple interest of (r )/(2)% per annum is Rs(2p+(prt)/(100))

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.

The simple interest of a principal in 1 year and 9 months at the rate of simple interest of 5% per annum is 63Rs more than of the same principal in 2 years and 4 months at the rate of simple interest of 4(1)/(2)% per annum. Find the principal.

Total interest of Rs 400 for 2 1/2 years at the rate of 6% simple interest per annum is

The compound interest on ₹ 2000 in 2 years if the rate of interest is 4% per annum for the first year and 3% per annum for the second year will be

The interest on Rs 1,250 for 15 years at the rate of 1.6% simple interest per annum will be:

Determine the total amount of Rs5000 at the rate of 7(1)/(2)% simple interest per annum is 5 years.

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 __________.