SOLUTION: the age of a father is now 5 times the age of his son. After 18 years, the age of the father will be twice his son's age. a). Let x and y be the present age of the father and his

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Question 805562: the age of a father is now 5 times the age of his son. After 18 years, the age of the father will be twice his son's age.
a). Let x and y be the present age of the father and his son respectively. Set up two equations connecting x and y.
b). Find their present ages.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x=5y
x-5y=0..................(1)
after 18 years
father's age = (x+18)
son's age (y+18)
(x+18)=2(y+18)
x+18=2y+36
x-2y=18...............(2)
subtract (2) from (1)
-3y=-18
y=6
father = 5x = 5*6=30 years