Question

in a class the average age of 20 student is 15 years if the teacher is also included in the class the average age increased by 1 year what is the age of the teachers

Answer 1

Heya mate !!!

Here is your answer :

Average age of 20 students = 15 years
Total age of 20 students = 20*15 = 300 years
Increased average = 15+1=16 years Total age of 20 students =16*20=320 years
Age of the teacher = 320-300= 20 years

Hope it helps you
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Answer 2

Answer:36

Step-by-step explanation:

Formula =

avg+no.of persons(increase)

15+21(1)= 36