Sun Devil stadium holds 73,379 people in the stands. At an Arizona State University football game, Darrel observed that about 10% of the seats were empty. Which of these would be a good estimate for the number of people attending that game?

a.)69,000 people

b.)60,000 people

c.)66,000 people

d.)63,000 people

Question

Sun Devil stadium holds 73,379 people in the stands. At an Arizona State University football game, Darrel observed that about 10% of the seats were empty. Which of these would be a good estimate for the number of people attending that game?

a.)69,000 people

b.)60,000 people

c.)66,000 people

d.)63,000 people

anonymous · Answer

If 10% of the people are missing, it must be the case that 90% of the people are there.  That is, 9/10 of the full capacity is seated in the stadium.  Hence,
$$n=0.9 \times 73,379=66,041.1 \approx 66,000$$which is answer (c).