Miranda likes to ride the train, because it always travels at the same comfortable speed. Last month, Miranda rode the train 90 miles. So far this month, she has ridden 60 miles. Last month, she spent one more hour traveling than she has this month? How many hours has Miranda spent on the train this month?
2 hours, the extra 30 miles last month indicates that every 30 miles totals 1 hour so if she traveled 60 miles then she traveled for 2 hours