Sunil invested $ 1600 fir 3 years and $ 1100 for 4 years at the same rate of Simple Interest. If the total interest from these investments is $ 506, what is the rate of interest?
Choose the correct choice
A) 2 3/4% B) 5 1/3% C) 5 1/2% D) 6% E) 3 2/4%
(1600x3xR)/100+(1100x4xR)/100=506   92R=506   R= 5 1/2%   Answer is 5 1/2%
<result>C</result>
Sunil invested $ 1600 fir 3 years and $ 1100 for 4 years at the same rate of Simple Interest. If the total interest from these investments is $ 506, what is the rate of interest?