Thread: 7th grade math problem
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sammyg2 sammyg2 is offline
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Quote:
Originally Posted by red-beard View Post
x*55+y*40=135
x+y=3
y=3-x
x*55+(3-x)*40=135
120+15x=135
15x=15
x=1
y=2
1 hour at 55, 2 hours at 40
55+80=135
Sez u.
Old 03-01-2014, 10:40 AM
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