Question

the average age of a class is 20 students is 20 years .when the age of the teacher is also included the average will be increased by 2 years what is the age of the teacher​

Answer 1

Answer:

this is your answer

Step-by-step explanation:

Teacher's age = (2) - (1) = 682 - 630 = 52 years. The average age of class of 20 students is 20 years. If the teacher's age is included the average increases by 1.

Answer 2

Answer:

62

Step-by-step explanation:

Concept

In maths, the average value in a set of numbers is the middle value, calculated by dividing the total of all the values by the number of values. When we need to find the average of a set of data, we add up all the values and then divide this total by the number of values.

SOLUTION

Total age of student=20*20=400

When teacher also include=21*22=462

Teacher age=462-400=62

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