SOLUTION: today a man is 5 times the age of his son. in 15 years, the son will be 1/2 his fathers age. how old are they now?

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Question 465452: today a man is 5 times the age of his son. in 15 years, the son will be 1/2 his fathers age. how old are they now?
Found 3 solutions by jorel1380, robertb, josmiceli:
Answer by jorel1380(3719)   (Show Source):
You can put this solution on YOUR website!
m=5s
m+15=2(s+15)
5s+15=2s+30
3s=15
s=5
The son is 5. The man is 25..

Answer by robertb(5830)   (Show Source):
You can put this solution on YOUR website!

==> 5s + 15 = 2s + 30
==> 5s - 2s = 30 - 15
==> 3s = 15
==> s = 5, the son's age now,
==> 5s = 25, the man's age now.

Answer by josmiceli(19441)   (Show Source):
You can put this solution on YOUR website!
Let = Father's age now
Let = Son's age now
given:
(1)
(2)
-----------------------
(2)
(2)
(2)
Substitute (1) into (2)
(2)
(2)
(2)
and
(1)
(1)
25 is the Father's age now
5 is the Son's age now
check:
(2)
(2)
(2)
(2)
OK