math just need someone to check and make sure this
posted by Marie .
The Office Jet printer can copy Janet's dissertation in 10 min. The Laser Jet printer can copy the same documents in 8 min. If the two machines work together, how long would they take to copy the dissertation?
10*8=80
80/18= 4.4
so it would take 4 min. is this correct?

4 min won't do it. It will take 4.4 as your original calculation shows.
Respond to this Question
Similar Questions

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? 
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 
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 
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? 
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? 
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? 
Algebra
The Office Jet printer can copy Janet's dissertation in 20 min. The Laser Jet printer can copy the same documents in 12 min. If the two machines work together, how long would they take to copy the dissertation? 
algebra
the office jet printer can copy maria's dissertation in 16 min. the jet printer can copy the same document is 8 min if the two machines work together how long would they take to copy the dissertation 
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 
ALGREBA
oFFICE JET PRINTERCOPY SUES DISSERTATION IN 22 MIN LASER PRINTER CAN COPY THE SAME IN 20 MIN HOW LONG WOULD IT TAKE TO TO COPY THE DISSERATION.