Question 629007: a teacher is four times as old as a student. in 12 years, the student's age will be half of the teacher's age. how old are they now Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! a teacher is four times as old as a student. in 12 years, the student's age will be half of the teacher's age. how old are they now
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Equations:
t = 4s
s+12 = (1/2)(t+4)
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Substitute for "t" and solve for "s":
s + 12 = (1/2)(4s+4)
s + 12 = 2s + 2
s = 10 (students's age now)
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Solve for "t":
t = 4s
t = 40 (teacher's age now)
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Cheers,
Stan H.
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