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?
2 answers
4 min won't do it. It will take 4.4 as your original calculation shows.
The OfficeJet printer can copy Janet's dissertation in 16 min. The LaserJet printer can copy the same document in 8 min. If the two machines work together, how long would they take to copy the dissertation?
Answer: 5 1/3
Answer: 5 1/3
1 answer