Question

Solve the question and find the age of the teacher​

Answer 1

Step-by-step explanation:

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let the ages of all the student be x1,x2,x3.........x10

and that of teacher be Y

so mean age of students :-

x1+x2+x3.....+x10/10=15 (given)

so x1+x2+......x10=150 ------(1)

and if age of teacher is included then

x1+x2+......x10+Y/11 = 17

so x1+x2+.....x10+Y = 187

150+Y = 187 ( from (1) )

Y = 37

so the age of teacher is 37

Answer 2

Answer

age of the teacher is 2

Step-by-step explanation:

age of students is 15

after adding teacher age it become 17

let the age of teacher be x

so equation form is

15 + x = 17

x = 17 - 15

x = 2