SOLUTION: Barry can do a certain job in 3 hours. whereas it takes Sanchez 5 hours to do the same job. How long would it take them to do the job working together?

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Question 56497This question is from textbook Algerbra for College Students
: Barry can do a certain job in 3 hours. whereas it takes Sanchez 5 hours to do the same job. How long would it take them to do the job working together? This question is from textbook Algerbra for College Students

Answer by AgusKwan(7) About Me  (Show Source):
You can put this solution on YOUR website!
Barry's capacity is 1%2F3 job/hr
Sanchez's capacity is 1%2F5 job/hr
Let the time needed for both of them to do one job = T
(1%2F3%2B1%2F5)*T=1 --> Both them work together to finish 1 job
%288%2F15%29*T=1
T=%2815%2F8%29hr