Page 1 of 1

AIME

Posted: Thu Apr 29, 2021 7:35 pm
by Swapnil Barua
Peter, Paul, David join a table tennis tournament. On the first day, two of them were
randomly chosen to play a game against each other. On each subsequent day, the loser of the game on
the previous day would be benched and the other two would play a game. After a certain number of
days, it was found that Peter had won 22 games, Paul had won 20 and David had won 32. How many
games had Peter played?

Re: AIME

Posted: Mon Jan 09, 2023 11:39 am
by naso12
I also wanted this. Anyone can help?
Thanks in advance, Best Regards

Re: AIME

Posted: Sat Mar 04, 2023 8:58 am
by asif e elahi
Every time Peter loses, he doesn't get to play in the next game. So we can (almost) make an one-to-one map between Peter's losing and not playing days. i,e if $x=$ number of games Peter lost, then $x = (22 + 20 + 32) - 22 - x \pm 1 \Rightarrow x=26$. So Peter played $26 + 22 = 48$ games.