Fick denna tankenöt via mail av min son !!! ???

<b>A mother is 21 years older than her son.
In 6 years she will be 5 times older than him.

Where's the Father?</b>

You dirty man... ;-)

He's inside her. At least a stiff part of him is inside the mother.

*Asgarv*

Haha, lol :D

Skulle vara kul att se Er ekvation. Visar Ni Er, får Ni se min. ;-)

<b>A mother is 21 years older than her son.
In 6 years she will be 5 times older than him.

Where's the Father?</b>

Svar: -9 mån

vi vet:

M = S + 21 och M + 6 = 5(S+6)
M + 6 = 5S + 30

alltså: (S+21) + 6 = 5S + 30
S+ 27 = 5S + 30
27-30 = 4S
-3/4 = S
S = -0.75 (år = 9 månader)

Oki
Finns väl inget annat sätt att formulera det.
m = s + 21

m + 6 = 5(s + 6)
m + 6 = 5s + 30
m = 5s + 24

m = s + 21
m = 5s + 24

0 = 4s + 3
-3 = 4s
-0.75 = s

-0.75 * 12 månader = -9 månader