Answer: 6/51 = 0.12
Step-by-step explanation:
Step 1. Find the amount of people that drink root beer over 40 years of age. (30)
Step 2. The total amount of people is 255, so to find the probability we express it as a fraction: 30/255.
Step 3. Simplify: 30/255=6/51. Or as a decimal: 0.12
