SOLUTION: Simon is 6yrs older than Alex and his sister is 8yrs younger than Alex . Their combined age is 37 . How old is Simon

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Question 964729: Simon is 6yrs older than Alex and his sister is 8yrs younger than Alex . Their combined age is 37 . How old is Simon
Found 2 solutions by t0hierry, MathTherapy:
Answer by t0hierry(194) (Show Source):
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simon age is 6 + alex age
sister is alex age - 8
simon age + sister age is 37

sm = al + 6
si = al - 8
sm + alex + si = 3 al -2 = 37
al = 39/3 = 13 years old
sm = 19 years old
I am assuming combined means 3 of them.

Answer by MathTherapy(10552) (Show Source):
You can put this solution on YOUR website!

Simon is 6yrs older than Alex and his sister is 8yrs younger than Alex . Their combined age is 37 . How old is Simon

Let Simon's age be S
Then Alex' is: S - 6, and Simon's sister's is: S - 6 - 8, or S - 14
We then get: S + S - 6 + S - 14 = 37
3S - 20 = 37
3S = 57
S, or Simon is: , or years-old