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

m=28

Step-by-step explanation:

0.1(0.5m+6)=2

Distribute

.05m +.6 =2

Subtract .6 from each side

.05m +.6-.6 = 2-.6

.05m = 1.4

Divide each side by .05

.05m/.05 = 1.4/.05

m = 28