Answer:
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
