The age of a man is 3 times that of his son .15 years ago, the man was 9 times as old as his son. What will be the age of the man after 10 years?
Question
Solution 1
Let's denote the current age of the son as x.
According to the problem, the current age of the man is 3x.
15 years ago, the son was x - 15 and the man was 3x - 15.
According to the problem, at that time, the man was 9 times as old as his son. So, we can write the equation: 3x - 15 = 9(x - 15).
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