SOLUTION: If Clyde can do a job in 8 days and Irv can do the same job in 3 days, how long would it take them to do the job together?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: If Clyde can do a job in 8 days and Irv can do the same job in 3 days, how long would it take them to do the job together?      Log On


   

Question 713354: If Clyde can do a job in 8 days and Irv can do the same job in 3 days, how long would it take them to do the job together?
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
So what is their combined rate? This is more comfortable thinking of the rate as jobs per time. This makes the easy relationship, rate*time=jobs, much as the traveling & motion relationship of rate*time=distance.

Clyde: 1%2F8 jobs per day.
Irv: 1%2F3 jobs per day.
Clyde and Irv together: %281%2F8%2B1%2F3%29 jobs per day. Compute. Remember, the question was asking for the reciprocal of this "together" rate.