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Australian AMC 2010 - Intermediate Question 21

AMC AUSTRALIA · Australian AMC 2010 - Intermediate

Question 21

Snugglepot and Cuddlepie were addicted to the video game *Jabberwocky*. One morning each of them won 70% of their games. That afternoon, they played the same number of games as each other and each won them all. Snugglepot’s winning percentage for the day rose to 85% and Cuddlepie’s to 90%. The minimum possible total number of games of *Jabberwocky* they could have played that morning was
  1. 10
  2. 20
  3. 30
  4. 60
  5. 70