Answer:
B. it will take them 8 hours to drive 400 miles
D. It will take them 18 hours to drive 900 miles
E. It will take them 1 hour to drive 50 miles
Explanation:
First, you solve for how fast there going an hour so in three hours they go 150 so we can divide 150 by 3 and we get 50. That means they go 50 miles in an hour. Then we can multiply 50 by the hours and see if we get the same number on miles.