Mathematics, 27.07.2019 15:00 4Tris

Seraphina is driving two hours to visit her family. for the first hour, she traveled at a speed of 58 miles per hour. then, in the second hour, she traveled at a speed of 67 miles per hour. what is the percentage increase of seraphina's speed? if necessary, round to the nearest tenth of a percent.

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Seraphina is driving two hours to visit her family. for the first hour, she traveled at a speed of 5...