SOLUTION: Sue drove her car at 25 mph for the first part of the trip and then changed her speed to 75 mph for the second part. If the entire trip is 725 miles and took 13 hours, how many hou

Question 885462: Sue drove her car at 25 mph for the first part of the trip and then changed her speed to 75 mph for the second part. If the entire trip is 725 miles and took 13 hours, how many hours are traveled at each speed?
Answer by geetha_rama(94) (Show Source): You can put this solution on YOUR website!
Let t1 and t2 be the time taken in hours for first part and second part
According to info given

Solving above equations we get t1=5hrs and t2 = 8 hours
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