Question

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

What was his average speed in miles per hour?

_[blank]_ miles per hour

Answer 1

To find Chen's average speed in miles per hour, you can use the formula:

\[
\text{Average Speed} = \frac{\text{Total Distance}}{\text{Total Time}}
\]

1. **Total Distance**: Chen rode 3.4 miles.
2. **Total Time**: Chen rode for \( \frac{3}{4} \) of an hour, which is \( 0.75 \) hours.

Now substitute the values into the formula:

\[
\text{Average Speed} = \frac{3.4 \text{ miles}}{0.75 \text{ hours}}
\]

To calculate this:

\[
\text{Average Speed} = \frac{3.4}{0.75} = 4.5333\ldots \text{ miles per hour}
\]

Rounding to two decimal places:

\[
\text{Average Speed} \approx 4.53 \text{ miles per hour}
\]

So, Chen's average speed was approximately **4.53 miles per hour**.