SOLUTION: the sum of the ages of joe and jim is 77. eight years from now, joe will be twice jim's age. find joe's present age?

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Question 425492: the sum of the ages of joe and jim is 77. eight years from now, joe will be twice jim's age. find joe's present age?
Answer by shree840(260) About Me  (Show Source):
You can put this solution on YOUR website!
x=joe
y=jim
x+y=77
x+8=2(y+8)or
x-2y=8
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subtract line 2 fom line 1
x+y=77
x-2y=8 subtracting the new line is
-x+2y=-8
y+2y=77-8=69
3y=69
y=23
x=77-23=54
answer joe=54 jim=31