SOLUTION: Steven is 12 years older than chris, last year he was twice as old as chris. how old are they now?

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Question 949792: Steven is 12 years older than chris, last year he was twice as old as chris. how old are they now?
Found 2 solutions by Alan3354, macston:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Steven is 12 years older than chris, last year he was twice as old as chris. how old are they now?
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25 & 13

Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
S=Steven's age; C=Chris's age
S=C+12
S-1=2(C-1) Substitute for S
C+12-1=2C-2 Add 2 to each side,
C+13-2C Subtract C from each side.
13=C ANSWER 1: Chris is 13 years old.
S=C+12=13+12=25 ANSWER 2: Steven is 25 years old.
CHECK
S-1=2(C-1)
25-1=2(13-1)
24=2(12)
24=24