SOLUTION: Please Help Me With This Word Problem. Mike Is 5 Years Older Than Hos Sister Lisa. Aaron Is Twice As Old As Lisa. The Sum Of Their Three Ages Is 45. How Old Is Lisa?

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Question 228707: Please Help Me With This Word Problem.
Mike Is 5 Years Older Than Hos Sister Lisa. Aaron Is Twice As Old As Lisa. The Sum Of Their Three Ages Is 45. How Old Is Lisa?
Answer by user_dude2008(1862) About Me  (Show Source):
You can put this solution on YOUR website!
M=L+5
A=2L
M+A+L=45


M+A+L=45
L+5+2L+L=45
4L=40
L=10 <----- Anwswer #1: Lisa is 10
M=L+5=10+5=15 <----- Anwswer #2: Mike is 15
A=2L=2(10)=20 <----- Anwswer #3: Aaron is 20