SOLUTION: I can't figure out this problem:
The sum of three sister's ages is 29. Jan is 3 years older than Cindy. Marsha is twice Jan's age. Find the girl's ages.
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The sum of three sister's ages is 29. Jan is 3 years older than Cindy. Marsha is twice Jan's age. Find the girl's ages.
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Question 410902: I can't figure out this problem:
The sum of three sister's ages is 29. Jan is 3 years older than Cindy. Marsha is twice Jan's age. Find the girl's ages. Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! (1)
(2)
(3)
There are 3 equations and 3 unknowns,
so it's solvable
From (2),
(2)
By substitution:
(1)
(1)
(1)
and
and
Jan's age is 8
Cindy's age is 5
Marsha's age is 16
