Question

While driving on the highway, Dave averages 60 miles per hour. In the city, he averages 30 miles per hour. On a trip to his grandmother's house, Dave drives 235 hours on the highway and 115 hours in the city. What is Dave's average speed for the entire trip to his grandmother's house? Round to the nearest tenth.

Answer 1

Approximately 50 miles per hour

Answer 2

Dave arrived to his grandmother's hours in7.75 hours.