Answer at least one of them. 1)four painters can paint a room in 6 hours. how long will it take three painters to paint the same room? 2)it takes three identical water pumps 8 hours to fill a pool. how long would it take four of the same pumps to fill the pool? 3)of 400 trees in a park, 280 are deciduous. what is the ratio of the deciduous trees to all trees in the park?