Post a New Question


posted by .

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

  • Algebra/Time -

    1/b = 1/22 + 1/18

    b = 22*18/(22+18) = 9.9 min

Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question