Question

julia can finish a 20-mile bike ride in 1.2 hours. katie can finish the same bike ride in 1.6 hours. how much faster does julia ride than katie?

Answer 1

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 2

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

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:

`\text{Speed} = \displaystyle\frac{\text{Distance covered}}{\text{Time taken}}`

Julia's Speed =
`\displaystyle(20)/(1.2) = 16.66\text{ miles per hour}`

Katie's Speed =
`\displaystyle(20)/(1.6) = 12.5\text{ miles per hour}`

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.