Newspapers 13781

Ten machines produced newspapers in 18 hours. Two machines rang for 2 hours. How many hours did the production take?

Correct answer:

t =  18.4 h

Step-by-step explanation:

10 18=(102) t+2 (t2)  10t=184  t=10184=18.4  t=592=18.4=18.4 h



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