Question
The Average age of a class of 22 students is 21 years. The average increased by 1 when the teacher’s age also included. What is the age of the teacher?
Answer: Option C
- Avg x Number = Total
21 years x 22 nos = 462 years …….(1)
22 years x 23 nos = 506 years
Teacher’s age = (2) - (1) = 506 – 462 = 44 Years
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- Avg x Number = Total
21 years x 22 nos = 462 years …….(1)
22 years x 23 nos = 506 years
Teacher’s age = (2) - (1) = 506 – 462 = 44 Years
Was this answer helpful ?
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