SOLUTION: Bill is 24 and Don is 16.How many years ago was Bill 3 times as old as Bill?

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Question 310720: Bill is 24 and Don is 16.How many years ago was Bill 3 times as old as Bill?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
B=24
D=16
im guessing u meant "3 times as old as Don"
24-x=3%2816-x%29
24-x=48-3x
3x-x=48-24
2x=24
x=12
12 years ago