Question

Seraphina is driving two hours to visit her family. For the first hour, she traveled at a speed of 55 miles per hour. Then, in the second hour, she traveled at a speed of 66 miles per hour. What is the percentage increase of Seraphina's speed? If necessary, round to the nearest tenth of a percent.
16.7%
83.3%
80%
20%

Answer 1

55*(1+x/100)=66 you always asks similar uestion

Answer 2

20%

Answer 3

thx