Question

In a School there are 30 teachers who teach English and Hindi of these 17 teach English and 8 teach both English and Hindi How many teach hindi​

Answer 1

Step-by-step explanation:

Total no. of teachers= 30

No. of teachers teaching English= 17+8 = 25

No. of teachers teaching hindi= 8+ (30-25)

= 8+ 5

= 13.

Hence, the no. of teachers teaching hindi are 13.

Answer 2

Answer:

21

Step-by-step explanation:

Let the Teachers Teaching only English be A

The ones Hindi be B

We Know, A ∪ B = 30

And A ∩ B = 8

Therefore, People who teach  only English = 17 - 8 = 9

And, Who teach only Hindi =  30 - 17 = 13

Therefore, Total people who teach Hindi = 13 + 8 = 21