10. A man driving a distance of 90 miles, averages 30 miles per hour. On the return trip he averages 45 miles per hour.
Posted: Thu Jul 14, 2022 3:47 pm
10. A man driving a distance of 90 miles, averages 30 miles per hour. On the return trip he averages 45 miles per hour. His average for the round trip, in miles per hour, is (A) 34 (B) 36 (C) 3721 (D) 40 (E) 75