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Average

Q. The averag...

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Q. The average age of 40 students in a class is 18 years. What will be the new average age if we include the age of 10 faculties whose average age is 33 years?

A

17

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B

19

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C

21

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D

23

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Solution

The correct option is C
21
New Average $= \frac{(40 \times 18) + (10 \times 33)}{40 + 10} = 21$

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Q. The average age of 40 students in a class is 18 years. What will be the new average age if we include the age of 10 faculties whose average age is 33 years?

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years join the class, thereby, decreasing the average by

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