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Mathematics, 04.02.2021 01:00 EnternalClipz
Seraphina is driving two hours to visit her family. For the first hour, she traveled at a speed of 56 miles per hour. Then, in the second hour, she traveled at a speed of 71 miles per hour. What is the percentage increase of Seraphina's speed? If necessary, round to the nearest tenth of a percent.
A. 21.1%
B.73.2%
C.26.8%
D.78.9%
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