Question 928407: 20 years hence, a man will be 3 times as old as he was 20 years ago. His present age is?
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! x + 20 = 3(x - 20)
x + 20 = 3x - 60
2x = 80
x = 40
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