SKYBLUE1015
02.03.2021 •
Mathematics
antonio and emilia are painting a room in their new house. antonio could finish the job in only 6 hours by himself, while emilia could finish the job in only 4 hours by herself. how long would it take them if they worked together?
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Ответ:
Step-by-step explanation:
Antonio’s rate is 1/6 while Emilia’s rate is 1/4 while working alone, together they will complete the job when.
t/6+t/4=1 making common denominators
(t/6)(2/2)+(t/4)(3/3)=1
(2t+3t)/12=1
5t=12
t=2.4 hours (or 2 hours and 24 minutes)
Ответ: