SOLUTION: On her way home from work, Brenda drove 20 miles at 60 miles per hour. Due to poor weather conditions, she then reduced her speed to 30 miles per hour for the remainder of the trip

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Question 1053398: On her way home from work, Brenda drove 20 miles at 60 miles per hour. Due to poor weather conditions, she then reduced her speed to 30 miles per hour for the remainder of the trip. Her entire commute to work is 80 miles in distance.
Based on the information provided above, which numerical value best represents how much less time would it have taken Brenda had she driven the entire distance at 40 miles per hour?
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
20 miles at 60 mph=1/3 hours
60 miles at 30 mph=2 hours
Total time: 2-1/3 hours
80 miles at 40 mph=2 hours
It would have taken 1/3 hour less time to go the whole trip at 40 mph. ☺☺☺☺