Math, asked by aishuaishaishu9911, 1 year ago

Average 30 student 9 years.if teacher inclded it becomes 10years.what is t
eacher age is

Answers

Answered by jyotigargynr

1

Step-by-step explanation:

average of 30=9yrs

realof30=30×9

=270

average of 31=10yrs

real of 31=31×10

=310

teacher age=310-270

=40yrs

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