SOLUTION: Janet can shovel snow from her driveway in 65 min. Bill can do the job in 35 min. How long would it take for them to do the job together?

Question 320652: Janet can shovel snow from her driveway in 65 min. Bill can do the job in 35 min. How long would it take for them to do the job together?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Janet can shovel snow from her driveway in 65 min.
Bill can do the job in 35 min.
bill can do 1/65 of the job in 1 minute
bill can do 1/35 of the job in 1 minute
together they do 1/65+1/35 of the job in 1 minute
=35+65 / 35*65
=100/2275
..
They take 2275 / 100 minutes to do the job together
= 22.75 minutes
RELATED QUESTIONS
Janet can shovel snow from her driveway in 45 minutes. Bill can do the same job in 35... (answered by stanbon)

Janet can shovel snow from her driveway in 65 minutes. Tom can do the same job in 50... (answered by mananth)

Marisa can shovel snow from her driveway in 40 min. Jim can do the same job in 30 min.... (answered by checkley79)

Janet can shovel snow freom her driveway in 50 minutes. Bill can do the same job in 45... (answered by mananth)

janet can shovel snow from her driveway in 30 minutes. Bill can do the same job in 40... (answered by stanbon)

sue can shovel snow from her driveway in 65 minutes. bill can do the same job in 30... (answered by nerdybill)

Mary can shovel snow from her driveway in 40 minutes. Bill can do the same job in 65... (answered by josmiceli,Alan3354)

#16 LISA CAN SHOVEL SNOW FROM HER DRIVEWAY IN 65 MINUTES. bILL CAN DO THE DRIVEWAY IN 45 (answered by oberobic)