SOLUTION: A college student earned $7000 during summer vacation working as a waiter in a popular restaurant. The student invested part of the money at 9% and the rest at 8%. If the student

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Question 272831: A college student earned $7000 during summer vacation working as a waiter in a popular restaurant. The
student invested part of the money at 9% and the rest at 8%. If the student received a total of $588 in interest at
the end of the year, how much was invested at 9%?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
.09X+.08(7,000-X)=588
.09X+560-.08X=588
.01X=588-560
.01X=28
X=28/.01
X=2,800 AMOUNT INVESTED @ 9%.
7,000-2,800=4,200 AMOUNT INVESTED @ 8%
PROOF:
.09*2,800+.08*4,200=588
252+336=588
588=588