Bob drove from home to work at 50 mph. After work the traffic was heavier, and he drove home at 30 mph. His driving time to and from work was 1 hour and 4 minutes. How far does he live from his job?

1.

The formula we need to solve this problem is:

Distance = Speed * Time

2.

Bob traveled the distance from work to his house at 30 mph, for 1 hour 4 minutes.

let's convert 1 hour 4 minutes to hours.

60 minutes are 1 hour

so 4 minutes are (4 minutes * 1 hour) / (60 minutes) = 0.067 hour.

Thus 1 hour 4 minutes = 1.067 h

The distance is Speed*Time = 30 mph*1.067 h=32.01 m

Answer: 32.01 miles