SOLUTION: bob is 1/4 as old as mary in four years from now bob will be 3/4 of marys age

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Question 560113: bob is 1/4 as old as mary in four years from now bob will be 3/4 of marys age
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
bob is 1/4 as old as mary in four years from now bob will be 3/4 of marys age
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Equations:
b = (1/4)m
(b+4) = (3/4)(m+4)
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Substitute for "b" and solve for "m":
((1/4)m + 4 = (3/4)m + 3
(1/2)m = 1
m = 2 (Mary's age now)
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bob = (1/4)m = 6 months (Bob's age now)
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Cheers,
Stan H.
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