Question 935752: Usman`s father is twice as old as he is twenty years ago.Usman`s father is seven times as old as his son. Find their current ages? Found 2 solutions by TimothyLamb, stanbon:Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! x = father age now
y = son age now
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x = 2(x - 21)
x = 7y
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x = 2x - 42
x = 42
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x = 7y
y = x/7
y = 42/7
y = 6
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answer:
x = father age now = 42
y = son age now = 6
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You can put this solution on YOUR website! Twenty years ago Usman`s father was twice as old as Usman is now
Usman`s father is now seven times as old as his son.
Find their current ages?
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Equations:
f-20 = 2u
f = 7*u
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Substitute for "f" and solve for "u"::
7u-20 = 2u
5u = 20
u = 4 (son's age now)
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f = 7u = 28 (father's age now)
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Cheers,
Stan H.
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