Question 1039352: Tim is three years older than his younger sister Kayla. The sum of the two ages is 9. How old is Tim? How old is Kayla? Found 2 solutions by Edwin McCravy, addingup:Answer by Edwin McCravy(20054) (Show Source): You can put this solution on YOUR website! Tim is three years older than his younger sister Kayla.
T = K+3
The sum of the two ages is 9.
T+K = 9
Substitute K+3 for T
K+3+K = 9
2K+3 = 9
2K = 6
K = 3
Kayla is K, and K = 3, so Kayla is 3.
Tim is T, or T = K+3 = 3+3 = 6, So Tim is 6.
Edwin
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website! T+K = 9 and
T = K+3 subtract K on both sides and add to above:
T+K = 9
+
T-K = 3
2T = 12
T = 6 Tim is 6 and since he is 3 years older than his sister, the sister is:
6-3 = 3
Now, the problem says their ages add up to 9:
Tim 6
Sis 3
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Total:9 Correct