SOLUTION: Marlee made $5 an hour working after school and $6 an hour working on Saturdays. Last week she made $64.50 by working a total of 12 hours. How many hours did she work on Saturday

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Question 108644: Marlee made $5 an hour working after school and $6 an hour working on Saturdays. Last week she made $64.50 by working a total of 12 hours. How many hours did she work on Saturday?
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
5X+6(12-X)=64.50
5X+72-6X=64.50
-X=64.50-72
-X=-7.5
X=7.5 HOURS @ $5 PER HOUR AFTER SCHOOL WORK.
12-7.5=4.5 HOURS @$6 PER HOUR SATURDAY WORK.
PROOF
5*7.5+6*4.5=64.50
37.5+27=64.50
64.50=64.50