Algebra

posted by .

The officejet printer can copy sues dissertation in 16 minutes. The laser printer can copy the same document in 22 minutes. If the two machines work together, how long would they take to copy the dissertation?

• Algebra -

rate of first copier = job/16
rate of 2nd copier = job/22
combined rate = job/16 + job/22 = job(19/176)

time at combined rate = job/(19job/176) = 176/19
or 9.26 minutes.

Similar Questions

1. Math

The officejet printer can copy Sue's dissertation in 18 min. The laserjet printer can copy the same document in 22 min. If the two machines work together how long would they take to copy the dissertation?
2. algebra

the officejet printer can copy lisa's dissertation in 18 min. the laserjet printer can copy the same document in 20 min. if the two machines work together, how long would the take to copy the dissertation
3. math

the officejet printer can copy lisa's dissertation in 18 min. the laserjet printer can copy the same document in 20 min. if the two machines work together, how long would the take to copy the dissertation
4. math

the officejet printer can copy Janet's dissertation in 10 minutes. The laserjet printer can print the same copy in 20 minutes. If the two machines work together, how long would they take to copy the dissertation?
5. algebra

The OfficeJet printer can copy Maria's dissertation in 18 min. The LaserJet printer can copy the same documents in 14 min. If the two machines work together, how long would they take to copy the dissertation?
6. Algebra II

The Officejet printer can print a dissertation in 10 minutes. It takes the Deskjet printer 16 min to copy the same document. If the two machines work together, how many minutes will it take to copy the document?
7. Algebra II

The Officejet printer can print a dissertation in 10 minutes. It takes the Deskjet printer 16 min to copy the same document. If the two machines work together, how many minutes will it take to copy the document?
8. algebra

the officejet printer can copy maria's dissertation in 18 min. The laserjet printer can copy the same document in 22 min. If the two machines work together, how long would they take to copy the dissertation?
9. algebra

the office jet printer can copy maria's dissertation in 16min the laser jet printer can copy the same document in 8min if the two machines work together how long would they take to copy the dissertation
10. Algebra

The officejet printer can copy sues dissertation in 16 minutes. The laser printer can copy the same document in 22 minutes. If the two machines work together, how long would they take to copy the dissertation?

More Similar Questions