Question

A subway goes 5 km from the sports complex to downtown in 30 minutes. What is the average speed of the subway? A. 2.5 km/h B. 6 km/h C. 10 km/h D. 150 km/h

Answer 1

It should be B!!!! Because you are suppose divide30km by 5 which is 6km/h.

Answer 2

C. 10 km/h

Step-by-step explanation:

IN order to calculate the average speed of a train that goes 5 km from the sports complex to downtown you just need to use the formula for speed:

`speed=(distance)/(time)`

Now you have to remember that you have time in minutes, and that in your options you have hours, so you need to convert minutes to hours:

`(60 minutes)/(1 hour)= (30 minutes)/(x) \\x=(30minutes*1 hour)/(60 minutes) \\x=.5 hours`

Now that you have the time in hours you just insert the values into the first formula:

`speed=(distance)/(time)\\speed=(5km)/(.5 hours) \\speed=15 (km)/(h)`

Your answer is 10 kilometers per hour.