Question

Chen rode his skateboard 3 3/4 miles in 3/4 of an hour. What was his average speed in miles per hour?

Answer 1

Do 3.75÷.75=5

You will end up getting 5, which is 5 miles per hour.

Hope this helped!!

Answer 2

His average speed in miles per hour is:

5 miles per hour.

Explanation:

We know that the average speed is the ratio of the distance over time.

i.e.

`\text{Average speed}=\frac{\text{Distance}}{\text{Time}}`

Here we have:

Chen rode his skateboard 3 3/4 miles in 3/4 of an hour.

Distance traveled is:

`3(3)/(4)=(15)/(4)\ \text{miles}`

and the time taken is:

`=(3)/(4)\ \text{hour}`

Hence,

`\text{Average speed}=((15)/(4))/((3)/(4))`

i.e.

`\text{Average speed}=5\ \text{miles per hour}`