In how many years will Rs. 2,000 amounts to Rs. 2,420 at 10% per annum amount interest?

In how many years Rs. 3000 amount to Rs. 5184 at 20% per annum compound interest ?

In how many years will Rs 7,000 amount to Rs 9,317 at 10 per cent per annum compound interest?

In what time will Rs 1000 amount to Rs 1331 at 10% per annum, compound interest?

In how many years will Rs 1800 amount to Rs 2178 at 10% per annum when compounded annually?

In how much time would Rs 5000 amount to Rs 6655 at 10% per annum compound interest?

In how much time would Rs 5000 amount to Rs 6655 at 10% per annum compound interest?

Calculate in how many years will Rs. 300000 amount to Rs. 399300 at the rate of 10% compound interest per annum.

In how many years will Rs 10,000 in compound interest at the rate of 10% per annum gets Rs 3,310 as compound interest.