Marissa is writing a book. The ratio of the number of pages she has written so far to the number of hours she has spent writing is 5:8. Which statement is true?

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.