Ngdduong1412
30/09/2018 at 13:51-
Huy Toàn 8A (TL) 02/10/2018 at 06:00In 6 days, every day do 8h need the number of people is :
6 . 9 : 6 = 9 (people
In 6 days, every day do 9h need the number of people is:
9 . 8 : 9 = 8 (people)
The answer is : 8 people
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