How much time will take for an amount of Rs. 480 to yield Rs. 81 as interest at 4.5% per annum of simple interest?
Choose the correct option
A) 8 years  B) 4 years  C) 3 years 9 months  D) 9 years  E) 5 years
Time = (100 * 81) / (480 * 4.5)   = 3 years 9 months   Answer: 3 years 9 months
<result>C</result>
How much time will take for an amount of Rs. 480 to yield Rs. 81 as interest at 4.5% per annum of simple interest?