SOLUTION: Amy charges $12 more for 5 hours of babysitting than she does for 3 hours of babysitting. What does Amy charge per hour of babysitting?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Amy charges $12 more for 5 hours of babysitting than she does for 3 hours of babysitting. What does Amy charge per hour of babysitting?      Log On


   

Question 1137683: Amy charges $12 more for 5 hours of babysitting than she does for 3 hours of babysitting. What does Amy charge per hour of babysitting?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +r+ = rate per hr for babysitting
+3r+%2B+12+=+5r+
+2r+=+12+
+r+=+6+
$6/hr
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check:
in 3 hrs, $18
In 5 hrs, $30
and
+18+%2B+12+=+30+
OK