Engineering Board Exam Reviewer · Venn Diagrams · medium

In a survey, 80% of people like coffee, 70% like tea, and 60% like both. What percentage like neither?

1. 10%
2. 20%
3. 5%
4. 15%

Answer

A. 10%

Solution

At least one =80+70-60=90%. Neither =10%.

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