Question 392910: Melinda's father Lester is 3 times as old as Melinda. Seven years ago, he was 4 times as old as Melinda. How old is each now? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Melinda's father Lester is 3 times as old as Melinda. Seven years ago, he was 4 times as old as Melinda. How old is each now?
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Equations:
f = 3m
(f-7) = 4(m-7)
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Substitute for "f" and solve for "m":
(3m-7) = 4m-28
m = 21 (Melinda's age now)
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Solve for "f":
f = 3m
f = 3*21 = 63 (Father's age now)
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cheers,
Stan H.
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