Great States - Fun & Educational Geography Game for Ages 7+ - 2-6 Players, 1st Edition

How long does this game take to play with 4 players? I'm thinking of planning a gameschool class, and would need to be set up-clean up in 50 minutes

how do we get a new copy of the instructions? My kids lost them.

Since there seems to be some errors in the earlier versions, what version is this game? What year was it manufactured?

Have the cards been updated to fix all the incorrect questions and answers?