SOLUTION: How do I solve this type of problem? If A:B=3:5 What is B if A is 12? Thanks...

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Question 449764: How do I solve this type of problem? If A:B=3:5 What is B if A is 12?
Thanks...
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
A:B=3:5
3/5=12/b
60=3b
b=20..