SOLUTION: Joe is 35 and his son is 5. In how many years will Joe be exactly three times as old as his son?
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Question 1138804: Joe is 35 and his son is 5. In how many years will Joe be exactly three times as old as his son?
Found 2 solutions by MathLover1, greenestamps:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
Joe is and his son is .
In years will Joe be exactly three times as old as his son:
answer: In years will Joe be exactly three times as old as his son.
check:
now, Joe is and his son is
in years, Joe is and his son is
and which confirms our solution
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
Without algebra....
The difference in their ages is 30; it will always be 30.
When Joe is 3 times as old as his son, the difference in their ages will be two times the son's age.
The age difference of 30 years will be two times the son's age when the son is 15.
Since the son is now 5, that will be 10 years from now.
ANSWER: Joe will be 3 times as old as his son in 10 years.
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