SOLUTION: Jan can deliver the mail in 4 hours. It takes Marcia 6 hours to complete the same route. How long would it take to deliver the mail if they worked together?

Question 774918: Jan can deliver the mail in 4 hours. It takes Marcia 6 hours to complete the same route. How long would it take to deliver the mail if they worked together?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Jan's rate of delivering main:
( 1 mail route ) / ( 4 hrs )
Marcia's rate of delivering mail:
( 1 mail route ) / ( 6 hrs )
---------------------
Add their rates to ge rate working together
Let = time in hrs working togther

Multiply both sides by

hrs

Working together, it will take them
2 hrs and 24 min

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