It trent can deliver his newspapers in 20 minutes. It takes Lois 30 minutes to do the same route. How many minutes would it take them to deliver the newspapers if they work together?
It trent can deliver his newspapers in 20 minutes. It takes Lois 30 minutes to do the same route. How many minutes would it take them to deliver the newspapers if they work together?
Trent can do 1/20 of the job in 1 minute.
Lois can do 1/30 of the job in 1 minute.
Their combined rate: 1/20 + 1/30 =1/12 of the job done in 1 minute,
Therefore it takes them 12 minutes to finish the job working together.
