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24th October 2007 | 08:05

#3 (permalink)

inner

Joined: Jul 2006

Posts: 298

Likes: 0

From: europe

My mistake, wrong anwsers

the right answers are:

person a is 120' working
person b is 240' working
person c is 80' working

but i still don't know how to obtain this answers

anyone can help??

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