SOLUTION: a plane averaged 500 miles per hour on a 4 hour flight. For the first three hours, the plane flew at 480 miles per hour. What was the speed of the plane, in miles per hour, during

SOLUTION: a plane averaged 500 miles per hour on a 4 hour flight. For the first three hours, the plane flew at 480 miles per hour. What was the speed of the plane, in miles per hour, during

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Question 482691: a plane averaged 500 miles per hour on a 4 hour flight. For the first three hours, the plane flew at 480 miles per hour. What was the speed of the plane, in miles per hour, during the last hour?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
500x4=2000 miles
3x480=1440
2000-1440=560/1=560 mph speed of the plane in the last hour..
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