SOLUTION: The sum of Sally and Beth age is 60.Six years ago,Sally was 3 times as old as Beth.What are thier present age?

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Question 1039607: The sum of Sally and Beth age is 60.Six years ago,Sally was 3 times as old as Beth.What are thier present age?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
s Sally
b Betty

system%28s%2Bb=60%2Cs-6=3%28b-6%29%29

system%28s%2Bb=60%2Cs-6=3b-18%29

system%28s%2Bb=60%2Cs-3b=-18%2B6%29

system%28s%2Bb=60%2Cs-3b=-12%29

Continue with first part of Elimination Method.
s%2Bb-%28s-3b%29=60-%28-12%29
2b=72
highlight%28b=36%29


Using age sum 60 again, find highlight%28s=24%29.

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

The sum of Sally and Beth age is 60.Six years ago,Sally was 3 times as old as Beth.What are thier present age?