Question

in a class average age of 41 students is 13.5 years if the age of of the class teacher is added to total ages of of the students then the average age increases bye six months find the age of the class teacher​

Answer 1

Answer:

If the age of the teacher is added to the total ages of the students,then the average age increases by 6 months. Find the age of the class teacher. Options=(1)43 years 6months.

Step-by-step explanation:

I hope this will help you

Answer 2

Answer:

Average age of 41 students:- 13.5

$13.5 = \frac{sum \: of \: their \: age}{41}$

$13.5 \times 41 = sum \: of \: their \: age$

553.5 = sum of their age

If teacher is added then average age is 14.1

$14.1 = \frac{553.5 + x}{42}$

$14.1 \times 42 = 553.5 + x$

$592.2 - 553.5 = x(age \: of \: teacher)$

= 38.7 year