SOLUTION: Three years ago A was four times as old as B. If B is today 11 years old. How old was A last year?

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Question 732292: Three years ago A was four times as old as B. If B is today 11 years old. How old was A last year?
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
Three years ago A was four times as old as B.
A-3=4%28B-3%29.......eq.1
If B is today 11 years old:
B=11 .......eq.1

+A+-3=4%28B-3%29....substitute B
+A+-3=4%2811-3%29
+A+-3=44-12
+A+-3=32
+A=32%2B3
+A=35 ..old today
last year +A=35-1=34 old