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Sagot :

Réponse :

if 4 men can do a job for 6 days,

1 man can do the job  in  24 days  

it will take 7 men    24/7   days

24/7  =  3   +   3/7  

3 days   and   3/7  

3 days  and   3*24/7  hours

3 days   10 hours  and 2/7  mn  

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