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?  Choose the most appropriate option
A) 1 year
B) 2 years
C) 3 years
D) 4 years
E) 5 years
Explanation:   P = Rs.900   SI = Rs.81   T = ?   R = 4.5%   T= (100×SI)/PR = (100 × 81)/(900 × 4.5) = 2 years   Answer: Option 2 years
<result>B</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?