math just need someone to check and make sure this
posted by Marie on .
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?
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.