ptrlvn01
14.01.2021 •
Mathematics
Rewrite each decimal as a fraction then calculate
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Ответ:
time = (Worker 1 * Worker 2) / (Worker 1 + Worker 2)
time = (18 * 20) / (18 + 20)
time = 360 / 38
time = 9.4736842105 minutes
So, the answer is "a. 9.5 minutes".
Source
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