SOLUTION: Molly is 4 years younger then Heidi. In 3 years, Heidi will be twice as old as Molly. How old are they now?

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Question 39946This question is from textbook alegbra 1
: Molly is 4 years younger then Heidi. In 3 years, Heidi will be twice as old as Molly. How old are they now? This question is from textbook alegbra 1

Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
Heidi is x years old
Molly is x-4 years old
In 3 years Molly will be x+3-4 and Heidi will be 2(x-1)
EQUATION:
2(x-1)=x+3
2x-2=x+3
x=5
5-4=1
Hence, Heidi is 5 years old and Molly is 1 year old.
Paul.