The answers you could use are both the second and the forth. But mostly the fourth.
Answer:600
Step-by-step explanation:
300,000/ 500 =600
81.
Add them all and then divide by the number of days (by 5)
Answer: 80 miles
Work: I just did 40 times 2 because they completed half their trip, and they need to complete 40 more miles.
<em>Happy Holidays! :)</em>