Question

What is the unit rate of 115miles in 2hours

Answer 1

You would divide miles to hours amd get 57.5

Answer 2

115 miles in 2 hours is what we call a rate: a comparison of two numbers with very different units.  This rate is 115 miles / 2 hours.  It's almost like a fraction!  The numerator is 115 miles, and the denominator is 2 hours.

So, what is a unit rate?  A unit rate is a rate (comparison of two numbers) with a denominator of 1.  So we need our rate, 115 miles / 2 hours, to have a denominator of 1.  We need to make the bottom number of our rate 1 hour.  How do we do that?  Well, we need to divide both the numerator (115 miles) and the denominator (2 hours) by 2!

115/2=57.5.  2/2=1.  So, this rate is equal to 57.5 miles / 1 hour.  Since the denominator is 1, THAT's a unit rate!!

Answer: 57.5 miles / 1 hour