How much time will it take for an amount of Rs. 400 to yield Rs. 60 as interest at 12% per annum of simple interest?  Choose one:  A) 2.35 years  B) 4.25 years  C) 7 years  D) 1.25 years  E) 2 years
Explanation:   Time = (100 x 60)/(400 x 12) years   = 1.25 years.   Answer: 1.25 years
<result>D</result>
How much time will it take for an amount of Rs. 400 to yield Rs. 60 as interest at 12% per annum of simple interest?