The average distance that he travelled every hour is; 2.4357 miles per hour
He drove 275 miles in 212 hours.
Now, to find the rate of distance per hour;
Distance per hour = 275/212 = 1.2972 miles per hour
He drove 357.5 miles in 314 hours.
Distance per hour = 357.5/314
Distance per hour = 1.1385 miles per hour
Thus, his average distance per hour = 1.2972 + 1.1385 = 2.4357 miles per hour
Read more about average distance at; https://brainly.com/question/308777