Do u know any of these? (only circled ones)

5)

7)

11)

If you can make a fraction smaller (Simplify it) it makes it alot easier and vice versa making a fraction bigger helps. In order to add them together they must be the same fraction values.

A)you divide 2,144 miles by 8 innorder to get the amount per one hour= which is 268 =)

and for B) since there is 3 cities ( Columbus, Ohio, and new York city) you divide 560 miles by 268 which is 2 (rounded)

and so the train would travel= 2 hours between the cities

hope this helps!!