Answer :

Julia: 20/1.2 = 16.67
Katie: 20/ 1.6= 12.5
16.67-12.5= 4.17

Julia can ride about 4.17 mi/hr faster than Kaite

Answer:

Julia rides faster than Katie by a factor of 4.6 miles per hour.

Step-by-step explanation:

We are given the following information in the question:

Distance covered bu Julia = 20 miles

Time taken by Julia to cover this distance = 1.2 hours

Distance covered bu Katie = 20 miles

Time taken by Katie to cover this distance = 1.6 hours

Formula:

[tex]\text{Speed} = \displaystyle\frac{\text{Distance covered}}{\text{Time taken}}[/tex]

Julia's Speed = [tex]\displaystyle\frac{20}{1.2} = 16.66\text{ miles per hour}[/tex]

Katie's Speed = [tex]\displaystyle\frac{20}{1.6} = 12.5\text{ miles per hour}[/tex]

Difference between Julie's and Katie's speed = 16.66 - 12.5 = 4.6 miles per hour

Julia rides faster than Katie by a factor of 4.6 miles per hour.

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