HELP PLEASE!! The number of winners of the dart game is recorded in the table shown.
Number of
Players
Game 145
Game 2 73
Game 3 95
Number of
Winners
12
26
34
Based on the combined data in the table, how many winners would you expect if there are 450 players?

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Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?