SOLUTION: Stephanie drove at an average rate of 50 miles per hour for 2 hours and then increased her average rate by 50% for the next 3 hours. Her average rate of speed for the 5 hours was <

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 Click here to see ALL problems on Linear Equations And Systems Word Problems Question 54268: Stephanie drove at an average rate of 50 miles per hour for 2 hours and then increased her average rate by 50% for the next 3 hours. Her average rate of speed for the 5 hours was t miles per hour. What is the value of t?Answer by Nate(3500)   (Show Source): You can put this solution on YOUR website!average ~> 50mph increase of 50% of average ~> 1.5(50) = 75mph (50*2 + 75*3)/5 = t (100 + 225)/5 = t 325/5 = t 65mph = t