Question

In a hostel there are 125 students, out of which 80 drink tea, 60 drink coffee and 20 drink tea and coffee both. find the number of students who do not drink tea or coffee.

Answer 1

Hey there!

Here,

Total no. of students (u) = 125

Student who drink Tea (T) = 80

Student who drink Coffee (C) = 60

Students who drink both (TnC) = 20

TuC = T + C - TnC

= 80 + 60 - 20

= 120

Therefore,
Students who didn't drink Tea n' Coffee is (TuC)'

(TuC)' = U - TuC

= 125 - 120

= 5

Five Students didn't drink Tea n' Coffee both.

HOPE IT HELPED ^_^

Answer 2

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Question :- In a hostel there are 125 students, out of which 80 drink tea, 60 drink coffee, and drink both tea and coffee. What is the number of students who do not drink tea or coffee?

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Well, ok. You got a total of 125 students in the hostel… 80 drink tea, 60 drink coffee, then 20 drink both.

So, 60 only drink tea, and 40 only drink coffee. Then 20 drink both.

60+40=100+20=120

now, how many don't drink tea or coffee out of 125?

125–120=5.

5 students drink neither

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Hope It's Helpful....:)