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Maths-

General

Easy

Question

In a population of 100 persons, 40 persons like tea and 30 persons like coffee. 10 persons like both of them. How many persons like only coffee?

10
20
30
40

hint Hint:

People who like coffee and people who like only coffee are two different statements.

The correct answer is: 20

$T o t a l space n u m b e r space o f space p e o p l e equals 100 T o t a l space n u m b e r space o f space p e o p l e space w h o space l i k e space t e a equals a equals 40 T o t a l space n u m b e r space o f space p e o p l e space w h o space l i k e space c o f f e e equals b equals 30 T o t a l space n u m b e r space o f space p e o p l e space w h o space l i k e space b o t h space t e a space a n d space c o f f e e equals c equals 10 T o t a l space n u m b e r space o f space p e o p l e space w h o space l i k e space o n l y space c o f f e e equals b minus c equals 30 minus 10 equals 20$

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