SOLUTION: mr. santos is 30 years older than his son. how old are the father and the son if the father is 15 yeaRS less than 4 times as old as his son.

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Question 566001: mr. santos is 30 years older than his son. how old are the father and the son if the father is 15 yeaRS less than 4 times as old as his son.
Answer by ad_alta(240) About Me  (Show Source):
You can put this solution on YOUR website!
Let the father's age be 'f' and the son's age 's.' Then s+30=f and f+15=4s. Substituting the first equation into the second we get (s+30)+15=4s. This gives s=15 and f=45.