SOLUTION: mary is 24 years old. tina is twice as old as mary 3 years ago. what will be tina's age 5 years from now?

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Question 387528: mary is 24 years old. tina is twice as old as mary 3 years ago. what will be tina's age 5 years from now?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let m = Mary's age now
Let t = Tina's age now
Three years ago, mary was 24+-+3+=+21
Three years ago, Tina was t+-+3
given:
m+=+24
t+-+3+=+2%2A21
-------------------
t+=+42+%2B+3
t+=+45
and
t+%2B+5+=+45+%2B+5
t+%2B+5+=+50
In five years, Tina will be 50 years old