# We know the details about the mother and child but where's the father?

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A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.

Where's the father?

posted Feb 16, 2014

## 2 Solutions

The mum is 21 years older than the child, so...
M = C + 21

In 6 years from now the mum will be 5 times as old as the child.
M + 6 = (C + 6) * 5

(C + 21)+ 6 = (C + 6) * 5
C + 27 = 5C + 30
-3 = 4C
C = -3/4

The child is 3 years 4 months old, i.e. it'll be born in 9 month's time.

Before 4 years and 1 month the father was probably nearby.

Adults will understand it better. :)

solution Mar 30, 2014

girls' parents are searching the father. :)

solution Jun 6, 2014 by

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