SOLUTION: Carol weighs three times as much as Sue. Together they weigh 160 pounds. Find the weight of each girl.

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Question 175293: Carol weighs three times as much as Sue. Together they weigh 160 pounds. Find the weight of each girl.
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
let c be the weight of carol and s be the weight of sue
:
c=3s......eq 1
c+s=160...eq 2
:
take c's value of 3s from eq 1 and plug it into eq 2
:
3s+s=160
:
4s=160
:
highlight%28s=40%29sues weight
:
highlight%28c=3%2840%29=120%29carol's weight