SOLUTION: it takes julie 60 minutes to pick the staples out of the wall in the hallway. Zach can do the same job in 40 minutes . how long will it take them if they work together algebra.com

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Question 832054: it takes julie 60 minutes to pick the staples out of the wall in the hallway. Zach can do the same job in 40 minutes . how long will it take them if they work together algebra.com
Answer by hovuquocan1997(83) About Me  (Show Source):
You can put this solution on YOUR website!
It takes Julie 60mins to finish, that means in 1 min she can do 1/60 the job
It takes Zach 40mins to finish, that means in 1 min he can do 1/40 the job
Now they ask for both of them, so if both of them work together, in 1 minute, they can do
1%2F60+%2B+1%2F40+=+40%2F2400+%2B+60%2F2400+=+100%2F2400+=+1%2F24 the job
So if they both work together, they can do 1/24 the job in 1 minute, that means they can finish the job in 24 minutes
TA-DAH
:D