I have no clue on how to complete this problem: Two spray paint machines are used to paint different portions of a large wall. The first machine...

I have no clue on how to complete this problem:

Two spray paint machines are used to paint different portions of a large wall. The first machine (nicknamed "paint pro") is used for 1 hours. The second machine (nicknames "goldilocks") is used for an hour and a half. When they are working at the same time, they can paint 55 square feet per minute. Together they painted 5850 square feet of wall. How many square feet of wall per minute can each machine paint?