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

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743