Question

A car travels 272 miles in 4 hours and 15 minutes. How many miles does it travel per hour?

Answer 1

Answer:

4hrs and 15 mins can be written as 4.25 cuz (15 is a qrtr of a hr) if u use the s = d/t eq and sub it in it gives ur ans.

Step-by-step explanation:

Answer 2

Answer:

The car travels 64 miles per hour.

Step-by-step explanation:

The problem is asking for the ratio between distance and time, and that it's the definition of speed, so we use:

$v=\frac{d}{t}$

Now, we need to find the ratio in miles and hours, that means we have to transform 15 minutes into hours to know the total time in hours.

We know that 1 hours is 60 minutes, applying this ratio, we have:

$15min\frac{1hr}{60min}=0.25 hr$

So, the total time the car travels is 4.25 hours.

Now, we calculate the ratio:

$v=\frac{272 \ miles}{4.25 hours}=64 \ miles/hr$

Therefore, the car travels 64 miles per hour.