If x dollars is invested at 9 percent for one year and y dollars is invested at 8 percent for one year, the annual income from the 9 percent investment will exceed the annual income from the 8 percent investment by $48. If $2,000 is the total amount invested, how much is invested at 9 percent?  Choose the correct answer.
A) 300	B) 250	C) 1223.53	D) 1133.24	E) 776.47
2 equations with 2 unknowns   9x / 100 - 8y / 100 = 48   and   x + y = 2000   Solving these 2 equations, x = 1223.53 and y = 776.47   Answer -1223.53
<result>C</result>
If x dollars is invested at 9 percent for one year and y dollars is invested at 8 percent for one year, the annual income from the 9 percent investment will exceed the annual income from the 8 percent investment by $48. If $2,000 is the total amount invested, how much is invested at 9 percent?