SOLUTION: a college student earned $5000 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 r
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Question 821593: a college student earned $5000 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 $431 in interest at the end of the year, how much was invested at 9%? Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! ---
9x + 8(5000 - x) = 43100
9x + 40000 - 8x = 43100
x = 3100
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answe:
$3100 was invested at 9%
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