Question

The formula for average speed when traveling a distance of ddd over a time ttt is \dfrac dt t d ​ start fraction, d, divided by, t, end fraction. Jeff and Cameron are arguing about which one of them is faster. Jeff says "I can run 777 kilometers per hour!" and Cameron says "I can run 100100100 meters per minute!" Which one is faster? Choose 1 answer: Choose 1 answer: (Choice A) A Jeff is faster than Cameron. (Choice B) B Cameron is faster than Jeff. (Choice C) C Jeff and Cameron are equally fast.

Answer 1

A Jeff is faster than Cameron.

Explanation:

Given

`Jeff = 7km/hr`

`Cameron = 100m/min`

Required

Which is faster

To do this, we simply convert both to the same unit.

We have:

`Jeff = 7km/hr`

Convert to m/min

`1km \to 1000m; 1hr \to 60min`

So:

`Jeff = (7 * 1000m)/(1 * 60min)`

`Jeff = (7000m)/(60min)`

`Jeff = 117\ m/min`

Recall that:
`Cameron = 100m/min`

By comparison:

`117m/min > 100m/min`

Hence, Jeff is faster.