In 3 years Rs. 2000 amounts to Rs. 2662 at r% compound interest, compounded annually. Find the value of r. 5% 12% 10% 8%

Find the principal, if the compound interest compounded annually at the rate of 10% perannum for three years is Rs 331

Find the amount of Rs.4000 for 3 years compounded annually, the rate of interest being 5% for the first 2 years and 10% for the next one year

The simple interest on a certain sum of money for 3 years at 5% p.a is Rs 1200. Find theamount due and the compound interest on this sum of money at the same rate after 3years, interest is reckoned annually.

If the simple interest is 10.5% annual and compound interest is 10% annual, find thedifference between the interest after 3 years on a sum of Rs. 1000.

At what percent per annum will sum of Rs 8000 amount to Rs 9261 in 3 years, if interest is compounded annually?20%4%5%8%