Stacy is painting her bedroom. She is able to paint 3 over 4 of the bedroom in 3 hours. At this rate, how long will it take her to paint the entire room?
If Stacy is able to paint 3/4 of the bedroom in 3 hours, then she can paint 1/4 of the bedroom in 1 hour since 3/4 divided by 3 equals 1/4.
To paint the entire room, which is made up of 4/4 parts, Stacy needs 4 times 1 hour equals <<4*1=4>>4 hours. Answer: \boxed{4}.