Derek's Pizza Party

Difficulty: Very Easy

Derek the blue monkey-man threw a pizza party. The Venn diagram shows how many friends ate which flavors of pizza.


  1. How many friends ate pepperoni pizza?
  2. How many friends ate cheese pizza?
  3. How many friends ate pizza altogether?
  4. How many friends didn't eat pepperoni pizza?
  5. How many friends came to Derek's party?

Hint: The numbers you see in the Venn diagram tell you how friends ate only pepperoni pizza, or only cheese pizza, or both; the number outside the circles tells you how many friends that didn't eat pizza. Don't forget that you must add the number of friends that ate both flavors to each number of friends that ate only one flavor.

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© Derek Cumberbatch