The GATE Grind

GATE 2021 CY – Question 3

General Aptitude · Quantitative Aptitude: Arithmetic and Number Computation · 1 mark · Multiple choice

In a company, 35% of the employees drink coffee, 40% of the employees drink tea and 10% of the employees drink both tea and coffee. What % of employees drink neither tea nor coffee?

  1. 15
  2. 25
  3. 35
  4. 40

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Correct answer: (C) 35

Explanation

Inclusion–exclusion gives the percentage drinking at least one beverage as 35+40−10=65%. Subtracting the intersection once prevents double counting people who drink both. The remaining percentage is 100−65=**35%, C**.