SOLUTION: Cassie averaged 50 miles per hour on a road trip to visit her grandparents. On the return trip there was heavier traffic, and she was only able to average 40 miles per hour. If i

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Question 895252: Cassie averaged 50 miles per hour on a road trip to visit her grandparents. On the return trip there was heavier traffic, and she was only able to average 40 miles per hour. If it took Cassie 2.2 hours to drive to her grandparents, how long did the return trip take?
Answer by lwsshak3(11628) About Me  (Show Source):
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Cassie averaged 50 miles per hour on a road trip to visit her grandparents. On the return trip there was heavier traffic, and she was only able to average 40 miles per hour. If it took Cassie 2.2 hours to drive to her grandparents, how long did the return trip take?
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Distance=travel time*speed
Distance to Cassie's grandparents home=2.2*50=110 miles
On return trip:
travel time=110/40=2.75
how long did the return trip take? 2.75 hrs