Question

In what time will Rs 5000 amount to Rs 2230 at 10% per annum, compounded annually?

Answer 1

Let us take the case of simple interest. Interest compounded annually.
  Total Interest I = n * P * r / 100      
                            n = number of years    P = principal  r = rate of interest
   I = Rs 2230 =  n * Rs 5000 * 10 / 100      => n = 4.46 years    ANSWER
         n = 4 years and 5 months and 15 days  14.4 hours and 24 minutes