What's the unit rate of 436 miles in 4 hrs?

Hello!

A unit rate is a ratio with the denominator 1, x : 1 for any number x.

We have to find a number x such that the ratio 436 miles : 4 hours is equal to x : 1 (which is actually the same as x). It is the same task as to divide 436 miles by 4 hours. The result is 109 miles / hour.

So the answer is: the unit ratio for 436 miles in 4 hours is 109 miles : 1 hour.