SOLUTION: Bob drove from home to work at 80 mph. After work the traffic was heavier, and he drove home at 75 mph. His driving time to and from work was 1 hour and 33 minutes. How far does he

Question 981969: Bob drove from home to work at 80 mph. After work the traffic was heavier, and he drove home at 75 mph. His driving time to and from work was 1 hour and 33 minutes. How far does he live from his job?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Bob drove from home to work at 80 mph. After work the traffic was heavier, and he drove home at 75 mph. His driving time to and from work was 1 hour and 33 minutes. How far does he live from his job?
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Avg speed of the round trip is 2*80*75/(80+75) = 2400/31 mi/hr
Time = 93/60 hour
RT distance = (2400/31)*93/60 = 120 miles
--> 60 miles each way

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