SOLUTION: Vanessa is 3 times as old as Christopher. 16 years ago, Vanessa was 7 times as old as Christopher. How old is Christopher now?

Question 957919: Vanessa is 3 times as old as Christopher. 16 years ago, Vanessa was 7 times as old as Christopher.
How old is Christopher now?
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
C=Christopher's age; V=Vanessa's age=3C
V-16=7(C-16) Substitute for V
3C-16=7C-112 Add 112 to each side.
3C+96=7C Subtract 3C from each side.
96=4C Divide each side by 4.
24=C ANSWER: Christopher is 24 years old
Vanessa is 3(24yrs)=72 years old.
CHECK
V-16yrs=7(C-16yrs)
72yrs-16yrs=7(24yrs-16yrs)
56yrs=7(8yrs)
56yrs=56yrs
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