John does a job in 16 hours. joe does the same job in 22. how long if they work together?'

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14-07-2017
Business

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John does a job in 16 hours. joe does the same job in 22. how long if they work together?'

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Аноним Аноним · Answer 1 · 2017-07-22T03:19:26+02:00

Аноним Аноним

22-07-2017

Joe's working rate = 1/16 per hour
Joe's working rate = 1/22 per hour

Let t = hours spent when working together.
Then
t = 1/(1/16 + 1/22)
= 1/(0.0625 + 0.0455)
= 9.263 hours
= 9 hours + 0.263*60 min
t = 9 hours, 16 minutes

Answer: 9 hours, 16 minutes

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