Question

مر
9. The average age of a teacher and three students is 20 years. If all the three students are of same age and the difference between the age of age of the teacher and each student is 20 years,then what is the age of the teacher?
(a) 25 years
(b) 30 years
(c) 35 years
(d) 45 years​

Answer 1

Answer:

answer = 45 years

because average age is 20

teacher age is 20 years more than students

20+20 = 40

since , they give us average it means every student is bigger than it

so, the age of the teacher is 45 years