Rates: work problems
Two Painters, One Room
Alice paints a room in 6 hours. Bob paints it in 3. A three-minute film on why the answer is 2 hours, and why you add rates instead of times.
This browser has 3D graphics turned off, so the set cannot be drawn. The math and the narration still play.
The problem
Alice can paint a room in 6 hours. Bob can paint the same room in 3 hours. Working together, how long will it take them to paint the room?
2 hours
