The age of father 3 yrs ago was 7 times the age of his sons. If the present age of father is 5 times the age of his son.What are the present age of father and son?
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Answer:
The father is 45 years old.
Step-by-step explanation:
Let x represent the father's age and y represent the son's.
So, if the father is 5 times the son's age today then the equation is: x=5y.
Three years ago the father was 7 times the son's age: 7(y-3).
Distribute and compare : 5y-3=7y-21
-3=2y-21
18=2y
9=y
The son's present age is 9, so the equation becomes: x=9(5)
=45
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