Correct total = reported total − the error in recording.<br><br>
• Reported total = 40 × 72 = 2880<br>
• Error = 64 − 46 = 18 (overcounted)<br>
• Correct total = 2880 − 18 = 2862<br>
• Correct average = 2862 ÷ 40 = 71.55<br><br>
Final Answer: 71.55