How much time will take for an amount of Rs. 200 to yield Rs. 81 as interest at 4.5% per annum of simple interest?  Options.
A) 7	B) 4	C) 5	D) 3	E) 9
Time = (100 * 81) / (200 * 4.5) = 4 years'   Answer:9
<result>E</result>
How much time will take for an amount of Rs. 200 to yield Rs. 81 as interest at 4.5% per annum of simple interest?