Write the ratio as a unit rate.

286 miles in 5 and one-half hours

To find the unit rate, divide the total number of miles by the total number of hours.

286 miles ÷ 5.5 hours = 52 miles per hour

The unit rate is 52 miles per hour.

To express the ratio as a unit rate, you need to divide the total miles by the total hours.

The ratio of 286 miles to 5 and one-half (or 5.5) hours can be written as:

286 miles / 5.5 hours

Now, to convert it to a unit rate, divide 286 miles by 5.5 hours:

286 miles / 5.5 hours ≈ 52 miles per hour

Therefore, the ratio of 286 miles to 5 and one-half hours can be expressed as a unit rate of approximately 52 miles per hour.