Question

The given table show the attendance at a cricket stadium (having a seating capacity of 4000) during all the matches of a ODI series.
$$\begin{array}{ccc}\text{Match NO:1}& \text{Total Attendance}& \text{Percentage of}\\ & \text{of Stadium}& \text{People Who Stayed}\\ & & \text{Back in the Stadium}\\ & & \text{till the end of play}\\ \text{First}& 18000& 80\\ \text{Second}& 24000& 90\\ \text{Third}& 32000& 95\\ \text{Fourth}& 30000& 85\\ \text{Fifth}& 25000& 92\end{array}$$Note: Everyone left the stadium at the end of the play. End of play occurs at the end of every day.
Q. What was the average number of people who left the stadium before the end of play on First, second and fourth matches?

• A. 1500
• B. 2500
• C. 3500
• D. 4500
• E. 5500

Answer 1

The correct option is C 3500

$\text{People who left}=\frac{18000\times 20}{100}+\frac{24000\times 10}{100}+\frac{30000\times 15}{100}=3600+2400+4500=10500\text{Required average}=\frac{10500}{3}=3500$