50% of the people in a restaurant are tea drinkers, 35 % are coffee drinkers while 20% drink coffee as well as tea. If 8 people drink coffee as well as tea, how many people in the restaurant drink neither coffee nor tea?
Answers
Given : 50% of the people in a restaurant are tea drinkers,
35 % are coffee drinkers
20% drink coffee as well as tea.
8 people drink coffee as well as tea,
To find : how many people in the restaurant drink neither coffee nor tea
Solution:
20% drink coffee as well as tea. = 8 people drink coffee as well as tea,
Let say total 100 % = X
=> (20/100) X = 8 => X = 40
50% of the people in a restaurant are tea drinkers,
=> Tea drinkers = (50/100)40 = 20
35 % are coffee drinkers = (35/100) 40 = 14
Total = Coffee + tea - both + None
=> 40 = 14 + 20 - 8 + None
=> None = 14
14 People in the restaurant drink neither coffee nor tea
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