Question

If a car is going 50 miles per hour at 2 pm and 60 miles per hour at 3 pm then it travels between 50 and 60 miles during the hour between 2 pm and 3 pm.

is it true?

Answer 1

This not necessarily always true. You can go over 70 miles for ten minutes and then 50 miles for the next ten and then you average 60 miles.