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, 2007

Algebra Difficulty 2.0 Junior Prove it Canada

Mike buys 8 tickets whose average cost is \$12. He then buys five more platinum tickets. What is the new average cost of the tickets that he has bought? Explain how you obtained your answer.

Want a route through all this instead of an archive? The track puts 2,604 problems in a working order, from Junior Challenge level to the IMO shortlist.

Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.