Question

the mean age of 25 student in class is 12 if the teacher as is included increased by one the teacher is in ears​

Answer 1

Answer:

Sum of ages = 25 * 12 = 300 . Now, If one more person is added the mean increases by 1 . So, New mean = 13 .

Answer 2

Step-by-step explanation:

Mean age of 25 students in a class is 12. If teacher's age is included. Yhe mean age increases by 1. The teacher's age i...

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