Choose all the examples that are unit rates. A. 3 cups flour per 2 cups milk B. 4 sandwiches for 3 people C. 5 stamps per person I D. 11.4 cars per hour I E. 24 coins per 4 players F. 30 miles per hour

## Step 1<br />A unit rate is a rate with a denominator of 1. It compares a quantity to 1 unit of another quantity. For example, if we have a rate of 3 cups flour per 2 cups milk, it is not a unit rate because the denominator is not 1. <br /><br />## Step 2<br />Let's analyze each option:<br /><br />### A. 3 cups flour per 2 cups milk<br />This is not a unit rate because the denominator is not 1.<br /><br />### B. 4 sandwiches for 3 people<br />This is not a unit rate because the denominator is not 1.<br /><br />### C. 5 stamps per person<br />This is a unit rate because the denominator is 1.<br /><br />### D. 11.4 cars per hour<br />This is a unit rate because the denominator is 1.<br /><br />### E. 24 coins per 4 players<br />This is not a unit rate because the denominator is not 1.<br /><br />### F. 30 miles per hour<br />This is a unit rate because the denominator is 1.