How much time will it take for an amount of Rs. 900 to yield Rs. 81 as interest at 4.5% per annum of simple interest?  Options:
A) 4 years B) 6 years C) 5 years D) 2 years E) 7 years
P = Rs.900   SI = Rs.81   T = ?   R = 4.5%   T= 100×SIPR=100×81900×4.5=2 years   ANSWER:2 years
<result>D</result>
How much time will it take for an amount of Rs. 900 to yield Rs. 81 as interest at 4.5% per annum of simple interest?