SOLUTION: The office jet printer can copy Janet's dissertation in 18 minutes. The laser jet printer can copy the same document in 14 minutes. If the two machines work together, how long wo

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: The office jet printer can copy Janet's dissertation in 18 minutes. The laser jet printer can copy the same document in 14 minutes. If the two machines work together, how long wo      Log On


   

Question 434691: The office jet printer can copy Janet's dissertation in 18 minutes. The laser jet printer can copy the same document in 14 minutes. If the two machines work together, how long would they take to print the dissertation?
Answer by psbhowmick(878) About Me  (Show Source):
You can put this solution on YOUR website!
Both Jet and Laser printer working together for 1 min. completes = 1%2F14%2B1%2F18=8%2F63th part of the job.

Therefore, both printers working together can finish the whole job in 63%2F8=7.875 minutes.