SOLUTION: Betty is now three times as old as mike,but in five years she will be only twice as old as mike. how old is mike right now

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Question 1029730: Betty is now three times as old as mike,but in five years she will be only twice as old as mike. how old is mike right now
Found 2 solutions by stanbon, Natolino1983:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Betty is now three times as old as mike,but in five years she will be only twice as old as mike. how old is mike right now
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b = 3m
b+5 = 2(m+5)
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Substitute for "b" and solve for "m"::
3m+5 = 2m+10
m = 5 yrs (mike's age now)
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Cheers,
Stan H.
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Answer by Natolino1983(23) About Me  (Show Source):
You can put this solution on YOUR website!
Let B: Betty's age (today)
M: Mike's age (today).
We have the equations:
1) B= 3×M
2)(B +5) = 2×(M+5)
So 1) in 2) 3×M + 5 = 2×M + 10
M = 5.
ANSWER: Mike is 5 years-old ( Betty is 15 years-old).
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