SOLUTION: Mel is 3 years older than Jade and Angela is twice as old as Mel. The sum of their ages is 57. How old is Mel?

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Question 1168014: Mel is 3 years older than Jade and Angela is twice as old as Mel. The sum of their ages is 57. How old is Mel?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Jade is youngest and will be x. This makes it easier to do.
Mel is x+3
Angela is 2(x+3)=2x+6
Their sum is 4x+9=57
4x=48
x=12
Mel is 15