If x dollars is invested at 10 percent for one year and y dollars is invested at 8 percent for one year, the annual income from the 10 percent investment will exceed the annual income from the 8 percent investment by $65. If $2,000 is the total amount invested, how much is invested at 8 percent?
Choose the correct choice from the following choices.
A) $ 550
B) $ 650
C) $ 750
D) $ 850
E) $ 950

Rationale: "0.1 x = 0.08 ( 2000 - x ) + 65 0.18 x = 225 x = 1250 then the amount invested at 8 % is $ 2000 - $ 1250 = $ 750 the answer is c ."
Answer: C