Civil Service Exam Reviewer · Word Problems · medium
A father is 5 times as old as his son. In 15 years, he will be 3 times as old as his son. How old is the son now?
- 15 years old
- 75 years old
- 30 years old
- 17 years old
Answer
A. 15 years old
Solution
Son = x, father = 5x. 5x + 15 = 3(x + 15) → x = 15.
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