SOLUTION: peter is 4 times older than mark. in 10 years he will only be twice as old as mark. what is each ones age?

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Question 1028700: peter is 4 times older than mark. in 10 years he will only be twice as old as mark. what is each ones age?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
peter is 4 times older than mark. in 10 years he will only be twice as old as mark. what is each ones age?
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M = Mark's age
P = Peter's age
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P = M + 4M = 5M
P+10 = 2*(M + 10) = 2M + 20
5M + 10 = 2M + 20
3M = 10
M = 3 1/3 years
P = 16 1/3 years
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PS 4 times older is not 4 times as old.