Mathematics, 06.08.2021 16:00, salihanegawo

A driver completed the first 20 miles of a 40 miles trip at an average speed of 50 miles per hour. At what average speed must the driver complete the remaining 20 miles to achieve an average speed of 60 miles per hour for the entire 40-miles trip? ( Assume that the driver did not make any stops during the 40-miles trip) A. 65
B. 68
C. 70
D. 75
E. 80

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A driver completed the first 20 miles of a 40 miles trip at an average speed of 50 miles per hour. A...