Question #N577
A survey asked 100 people if they prefer to eat pizza or tacos. Of the people surveyed, 60% preferred pizza. If 30 people said they preferred tacos, how many people preferred pizza?
A. 40
B. 50
C. 60
D. 70
Correct Answer is: D
If 60% of the people surveyed preferred pizza, then 40% preferred tacos. Since 30 people preferred tacos, then 30 represents 40% of the people surveyed. We can set up a proportion: \frac{30}{40} = \frac{x}{100}. Solving for $x$, we get $x = 75$. Since 75 people preferred tacos, then 100 - 75 = 25 people preferred pizza.