Question

In a sample of 100 randomly selected concert attendees, the concert organizers find that 11 of them left the show early. The concert originally had 2,040 attendees.

A. Use proportional reasoning to estimate how many of the total number of attendees left the concert early.

B. Suppose there are 3 concerts at this hall next week, and the total attendance will be 5,500. Use a percent expression to predict the number of these attendees who will leave a concert early next week.

Answer 1

A) ≈22.4 concert attendees might have left early.

B) 605 attendees might leave early.

Explanation:

A) 11/100, or 11%, of the sample left early.

11% of all the concert attendees is (11/100) × 2040 ≅ 22.4

attendees who might have left early.

B) 11% of the total attendance is 11% × 5500 = 605 attendees who might

leave early.