SOLUTION: A mother is four times as old as his son. In 6 years, she will be three as old as he is. How old is the son now?

Question 990780: A mother is four times as old as his son. In 6 years, she will be three as old as he is. How old is the son now?
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
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M=mother's age; S=son's age
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M=4S Use this to substitute for M.
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M+6=3(S+6) Substitute for M from above.
4S+6=3S+18
S=12
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ANSWER: The son is 12 years old.
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CHECK:
M=4(S)=4(12)=48yrs
Mother is 48 years old.
M+6=3(S+6)
48+6=3(12+6)
54=3(18)
54=54

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