Difference between the compound interest and the simple interest accrued on an amount of Rs. 18000 in two year is Rs. 405. What was the rate of interest?
Choose one
A) 14%  B) 16%  C) 12.5%  D) 15%  E) 15.5%
C.I -S.I =P(R/100)^2   405=18000(R^2/10000)   (405*10000)/18000=R^2   R^2=225   Ans R=15%   ANSWER:15%
<result>D</result>
Difference between the compound interest and the simple interest accrued on an amount of Rs. 18000 in two year is Rs. 405. What was the rate of interest?