Story problem help

[joejoe57]

I'm stuck on this problem. If john takes 6hrs to do a job & tom takes 4hrs to do a job, how long would it take to complete the job if both guys work together?

HELP!

 

[Deleted member 4993]

I'm stuck on this problem. If john takes 6hrs to do a job & tom takes 3hrs to do a job, how long would it take to complete the job if both guys work together?

HELP!

What fraction of work John can do in 1 hr? = 1/6

What fraction of work Tom can do in 1 hr? = ?

Now continue....

 

[joejoe57]

Thank You!