SOLUTION: A college student earned $6700 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 395150: A college student earned $6700 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 $564 in interest at the end of the year. How much was invested at 9%? Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! A college student earned $6700 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 $564 in interest at the end of the year. How much was invested at 9%?
$x ---------------- 9%
6700-x-------------8%
..
Interest earned = 564
..
9x+8(6700-x)=564*100
9x+53600-8x=56,400
x=56,400-53600
x=2,800 investment @ 9%
...
m.ananth@hotmail.ca
