SOLUTION: John is 4 times as old as Martha. 5 years ago the sum of their ages was 50. How old are they now.

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Question 413563: John is 4 times as old as Martha. 5 years ago the sum of their ages was 50. How old are they now.
Answer by jchillier(2) About Me  (Show Source):
You can put this solution on YOUR website!
x-5 + 4x-5 = 50
combine like terms
5x-10 = 50
add 10 to each side
5x=60
divide by 5
x=12
4x= 48
they are 12 & 48 years old