1.

The average age of a child in a class of 35 is 11. The average age, including the teacher is 12. How old is the teacher?​

Answer»

Answer:

47

Step-by-step EXPLANATION:

the AVERAGE age of students =x/35is 11

x=35×11=385

the average age of student and teacher =x/36=12

x=36×12

=432

the age of teacher= 432 - 385 =47



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