SOLUTION: A FATHER IS 3YEARS YOUNGER THAN 5 TIMES HIS SON'S AGE. SUPPOSE THE SON IS X YEARS OLD. GIVE AN EXPRESSION IN X FOR THE FATHER'S AGE ?

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Question 1087626: A FATHER IS 3YEARS YOUNGER THAN 5 TIMES HIS SON'S AGE. SUPPOSE THE SON IS X YEARS OLD. GIVE AN EXPRESSION IN X FOR THE FATHER'S AGE ?
Answer by 4419875(21) About Me  (Show Source):
You can put this solution on YOUR website!
Let
F be the father's age
C be the child's age
Suppose,
F= 5x-3
and
C=x
For instance, the child is 15. By substitution, F= 5(15)-3. We then simplify which result to 72, the age of the father.
Ok let's check
The father is 5 times 15, the age of the son, subtracted by 3 since 3 years younger. Hence, we get 75 minus 3 which result to 72. Therefore, F= 5x-3 is the
equation for x values permitted.