Ruby surveyed her friends about their favorite type of pizza. of those surveyed, 4 flavored cheese pizza, 3 flavored pepperoni pizza, and 1 flavored sausage pizza. based on these results, predict how many of rubys 40 party guess will favor pepperoni pizza

15 people

Step-by-step explanation:

Ruby surveyed a sample of

4 + 3 + 1 = 8 people

Out of which, 3 preferred pepperoni pizza.

So that's 3 out of 8 people preferring pepperoni pizza (or 3/8 = 37.5%]

Now, if we make this into 40 people, the prediction of how many would like pepperoni pizza would be same ratio. So:

3/8 * 40 = 15 people

Our prediction would be 15 people