Concept explainers
Five years from now, a father’s age will be three times his son’s age, and 5 years ago, he was seven times as old as his son was. What are their present ages?
To find: The present age of father and son.
Answer to Problem 16P
The present age of son is 10 years and present age of father is 40 years.
Explanation of Solution
Given information: Five years from now, a father’s age will be three times his son’s age, and 5 years ago, he was seven times as old as his son was.
Calculation: Let the present age of son be x years.
Then, five years from now, age of son will be
Again, five years ago, age of son was
According to the problem,
Thus, the present age of son is 10 years and present age of father is 40 years.
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