A nice maths riddle

Messaggioda Valerio Capraro » 06/10/2011, 15:24

This is a nice maths riddle, from the movie "Fermat's room":

A mother is 21 years older than her son. In six years, the son will be one-fifth the age of the mother. Question: What is the boy's father currently doing?
Valerio Capraro
University of Southampton (United Kingdom)
www.valeriocapraro.com
https://www.researchgate.net/profile/Va ... =prf_highl
Valerio Capraro
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Re: A nice maths riddle

Messaggioda cenzo » 06/10/2011, 18:17

Testo nascosto, fai click qui per vederlo
Maybe, he's working hard :-D
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cenzo
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