At a symposium, 20% of the professors are psychologists, 60% are biologists and the remaining 12 professors are economist. If 20 of the professors wear glasses, what percent of the professors do not wear glasses?

1. At a symposium, 20% of the professors are psychologists, 60% are biologists and the remaining 12 professors are economist. If 20 of the professors wear glasses, what percent of the professors do not wear glasses?

[Officer (Cash) 2018 [MCQ] : 2018]

1. 20%

2. 331/3%

3. 50%

4. 66.2/3%

Answer

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