Math Olympiad Elementary | 2016 | Division E | Contest 3 | MOEMS | 3C

Problem: In a parking lot are 60 cars, all of which are black or blue and all of which are Fords or Dodges. There are 25 black dodges. There are 18 blue cars. There are 25 Fords. How many blue Fords are there?

Key: Make a table, add the 'TOTAL' section

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