SOLUTION: Lauren works 8-hour shifts at a book store. She makes $7 an hour and receives a 20% commission on her sales. How much does she need to sell in one shift to earn exactly $80 bef

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: Lauren works 8-hour shifts at a book store. She makes $7 an hour and receives a 20% commission on her sales. How much does she need to sell in one shift to earn exactly $80 bef      Log On

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Question 1139341: Lauren works 8-hour shifts at a book store.
She makes $7 an hour and receives a 20%
commission on her sales. How much does
she need to sell in one shift to earn exactly
$80 before taxes are deducted?

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x, amount of money she sells

8%2A7%2B0.2x=80
-
80-56=x%2F5
x=5%2880-56%29
x=120