my awuul Equivalent Rallus if you know the ratio of inches to centimeters is 10 254 how can you find the number of centimetersecuvalent to 9 inches? What is the relationship between centimeters and inches

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.