Working together, Joe and Joanne finish a job in 2 hours. How long will it take Jeremy and Joe to finish the job? (1) Working alone and without breaks Joe takes 5 hours to finish the job, which is 400% as long as the time it takes Jeremy to finish the job. (2) Working alone and without breaks Joanne takes 10 hours to finish 3 times the job.

Step-by-step explanation:

Then Joe and Jeremy will do the job in one hour time

Joe takes 5 hours to do the job then in one hour time he does 1/5

Joe takes 400% as long as the time it takes Jeremy to finish the job

then 5 hours 400

x? 100 x = 5/4

So Jeremy will take 5/4 hours to do the job.

Then in one hour working together Joe and Jeremy they will do

1/5 + 1 / (5/4) = 1/5 + 4/5 = 5/5 = 1

Then Joe and Jeremy will do the job in one hour time

And Joe and Joanne will do half job in one hour