This problem is from the yearly AIME exam which is administered to the top 2.5% of scorers on the AMC exam.
Timestamps:
0:00 - Concept
0:53 - Cleaning Up
You can find the problem and its solution here: https://artofproblemsolving.com/wiki/index.php/1990_AIME_Problems/Problem_15
You can find more information about this competition here:https://amc-reg.maa.org/
If you have any questions, feedback, or video ideas, please leave them in the comments or email me at [email protected] and I will try to get back to you as soon as possible.
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