Sunil invested $ 1800 fir 2 years and $ 1400 for 3 years at the same rate of Simple Interest. If the total interest from these investments is $ 810, what is the rate of interest?
Choose one:
A) 12 3/4% B) 25 1/3% C) 10 1/4% D) 8% E) 13 2/4%
(1800x2xR)/100+(1400x3xR)/100=810   78R=810   R= 10 1/4%   Answer is 10 1/4%
<result>C</result>
Sunil invested $ 1800 fir 2 years and $ 1400 for 3 years at the same rate of Simple Interest. If the total interest from these investments is $ 810, what is the rate of interest?