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SOMEONE KNOW THIS, IS STUDY ISLAND

Seraphina is driving two hours to visit her family. For the first hour, she traveled at a speed of 61 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

Respuesta :

retirEEd

Answer:

the option are A.

92.4%

B.

7.6%

C.

91.8%

D.

8.2%

Step-by-step explanation:

Think of it what times 61 will equal 66....

     61 () = 66

     (?%) = 66 /61

     (?) = 1.08196   

so now it gets tricky get the percentage increase correct

based on the given answer choices I'ld say it is D

     % increase = (1.08196 - 1) (100)          Why the subtraction of one? ?

                        = 8.196%

                        = 8.2 %

   

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