Current time:0:00Total duration:3:27
0 energy points
2013 AMC 10 A #23 / AMC 12 A #19
Video by Art of Problem Solving. Problem from the MAA American Mathematics Competitions. Created by Art of Problem Solving.
If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.