Math :-)
By lucterius
@lucterius (213)
Belgium
December 20, 2006 10:41am CST
The mother is 21 years older than the child. In 6 years from now the mother will be 5 times as old as the child.
Question : Where's the father?
Try first, before you check the answer below!
Solution :
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The mum is 21 years older than the child.
M = C + 21
In 6 years from now the mum will be 5 times as old as the child.
M + 6 = 5 x (C + 6)
Hence,
C + 21 + 6 = (C + 6) x 5
C + 27 = 5C + 30
-3 = 4C
C = -3/4
The child is -3/4 years old, i.e. it will be born in 9 months.
So right now, the father is in the mother :=)
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