saifulcrc1397
15.11.2019 •
Mathematics
Jin and chen are painting a fence. each plank in the face takes one person about 3 minutes to paint. if there are 8 sections of fence with 12 planks in each section, about how many hours will it take jin and chen to do the job?
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Ответ:
8 sections x 12 planks per section = 96 total planks.
If 1 person can do 1 plank in 3 minutes, then 2 people can do 2 planks in 3 minutes.
96 planks ÷ 2 planks = 48 sections of 3 minutes.
48 x 3 = 144 minutes
144 ÷ 60 = 2 hours 24 minutes
Ответ:
Ответ:
7.14
Step-by-step explanation: