jessieCochrane8538 jessieCochrane8538
  • 20-11-2017
  • Mathematics
contestada

Find how long it would take to do a job together if it takes one person 6 hours alone and it takes another person 14 hours alone.

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jorel1380
jorel1380 jorel1380
  • 21-11-2017
1/6+1/14=1/n
14/84+6/84=1/n
20/84=1/n
84=20n
n=84/20=21/5 hours working together
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