Calculate the time in which Rs. 1,250/- would become Rs. 1,375/- at 4% rate of interest per annum ?

In what time will Rs. 72 become Rs. 81 at 6(1)/(4)% per annum simple interest ?

In what time will Rs. 1,800 yeild simple interest of Rs. 390 at the rate of 5% per annum ?

Find the amount which Rs.60000 will become in 1frac(1)(2) yr at 4% per annum if the interest 4% per annum if the interest is being compounded half yearly.

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

In how many years Rs 100000 will become Rs 1,33,100 at compound interest rate of 10% per annum?

What is the sum (in Rs) of money which will become Rs 29160 at the rate of 8% per annum at compound interest in two years?