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WAEC Mathematics 2007 Question 38

Question 38

Sets

The Venn diagram shows the choice of food of a number of visitors to a canteen. If there were 35 visitors in all, find the value of x.

Diagram for this question
  1. A.5
  2. B.4
  3. C.3
  4. D.2
Show the answer and explanation

Answer: A (5)

Explanation

Add all the regions: 5 + 6 + 8 + 4 + 2 + 5 + x = 30 + x = 35, so x = 5.