SOLUTION: A gal went to school & the
teacher asked how old are u? She replied I don't
know, bt I know that I'm half my mother's age. The
teacher asked ok how old is yor mother? She said I
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teacher asked how old are u? She replied I don't
know, bt I know that I'm half my mother's age. The
teacher asked ok how old is yor mother? She said I
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Question 938722: A gal went to school & the
teacher asked how old are u? She replied I don't
know, bt I know that I'm half my mother's age. The
teacher asked ok how old is yor mother? She said I
don't know bt I know that my Dad is 5 yrs older
than my mother. Teacher, how old is yor dad? She said I don't know bt I know that if we add our ages
the answer is 100 yrs. Nw how old is the gal, her
mum & her dad? Found 2 solutions by stanbon, ewatrrr:Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A gal went to school & the
teacher asked how old are u? She replied I don't
know, bt I know that I'm half my mother's age. The
teacher asked ok how old is yor mother? She said I
don't know bt I know that my Dad is 5 yrs older
than my mother. Teacher, how old is yor dad? She said I don't know bt I know that if we add our ages
the answer is 100 yrs. Nw how old is the gal, her
mum & her dad?
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Equations:
g = (1/2)m
d = m + 5
g + m + d = 100
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Substitute for "g" and "d" and solve for "d"::
(1/2)m + m + m+5 = 100
----
(5/2)m = 95
(1/2)m = 19
mother = 38
---
gal = (1/2)m = 19 yrs
Cheers,
Stan H.
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You can put this solution on YOUR website! gal + mother + dad = 100
x Dad's age |Multiplying thru by 2 so as all denominators = 1
(x-5) + 2(x-5) + 2x = 200
(x-5) + 2x -10 + 2x = 200
5x = 215
x = 43, Dad's age, mother 38 and gal 19
And...checking
sum = 100
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