The scale on a map is 1/4 in : 20mi. the distance between to cities on the map is 4 1/2 inches. what is the actual distance between the two cities?

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.