Question

In a group of 50 people, 14 people drink tea but coffee is not a father and 30 people drink tea, so (a) how many people drink both tea and coffee? (b) How many people drink coffee but not tea?​

Answer 1

Answer:

hi

Step-by-step explanation:

the answer is in the attachment

Answer 2

Answer:

Let A and B be sets of persons who drink tea and coffee respectively. 

Then 

n(A∪B)=50 

n(A−B)=14 

n(A)=30.

n(A−B)=14 

⇒n(A)−n(A∩B)=14 

⇒n(A∩B) 

n(A)−14=30−14=16.