# SOLUTION: a man is 4 times as old as his son.20 years later he will be just twice as old as his son.find their present ages.

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 Click here to see ALL problems on Age Word Problems Question 518918: a man is 4 times as old as his son.20 years later he will be just twice as old as his son.find their present ages.Answer by Maths68(1474)   (Show Source): You can put this solution on YOUR website!Let Present age of Man = m Present age of Son = s Man is 4 times as old as his son. m=4s.............(1) 20 years later Man age = m+20 Son age = s+20 Then he will be just twice as old as his son. m+20=2(s+20) m+20=2s+40 m=2s+40-20 m=2s+20..............(2) Put the value of m from (1) to (2) 4s=2s+20 4s-2s=20 2s=20 2s/2=20/2 s=10 Put the value of s in (1) m=4s m=4(10) m=40 Present age of Man = m = 40 years old Present age of Son = s = 10 years old