How much time will it take for an amount of Rs. 450 to yield Rs. 81 as interest at 4.5% per annum of simple interest?

The compound interest on Rs. 1250 for 1 ¹/₂ years at 8 percent per annum, interest payable half yearly is 

The difference between the simple interest for 6 years at 6% per annum and for 4 years at 4% per annum on R.S _____ is Rs. 500

The compound interest on Rs. 7500 at 8% per annum for 5 years is 

At what rate percent compound interest will  Rs. 625 amount to Rs.900 in 2 years 

At what rate percent per annum simple interest will a sum of money triple itself in 25 years

The difference between simple interest and the compound  interest on Rs. 800 at 5% per annum for 1 year is.

Calculate the amount on Rs. 4,000 at 8% per annum for 2 years 

If the discount is 10% an items bought for Rs.9 is prices at 

A sum amounts to rs. 1352 in 2 years at 4% compound interest.  The sum is