PART 1: The Rational Reader, a popular daily newspaper, has to be printed by 5 a. m. so that it can be distributed. Late one night a major story broke and the front page had to be rewritten, which delayed the start of the printing process until 3 a. m. To try to get the printing done on time, the Reader used both their new printing press and their old one. The new press is three times as fast as the old one, and with both of them running, the printing was finished exactly on time.

1. How long does it take to print a normal edition of the paper using only the new press?

PART 2: The cafeteria in the Rational Reader's building needs to be painted, and three employees are interested in doing the work. Pat and Robin can do the job together in 10 hours. Chris and Robin together can do it in 15 hours, while Pat and Chris could do it in 30 hours together. The Reader management decides to hire all three of them, and will pay a total of $450 for the job.

1. How long will it take them all working together to paint the cafeteria?
2. If each person gets paid by the amount of wall they painted, how much would each earn?