Question

the average of a class of 40studentsnis 15 years .when the age of the teacher is also included the average will be increased by 8 months .the age of the teacher is​

Answer 1

Answer:

Total age of 39 persons=(39×15)years=585 years Average age of 40 persons=15 years 3 months

=

4

61

years

Total age of 40 persons =(

4

61

×40) years =610 years

∴ Age of the teacher =(610−585) years=25 years

Step-by-step explanation:

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