Quantitative Aptitude Ques 409

Question: The average age of a class of 15 students is 10 yr. If the age of teacher is also included, then the average increases by 1 yr. Find the age of teacher.

Options:

A) 25 yr

B) 26 yr

C) 27 yr

D) 28 yr

Show Answer

Answer:

Correct Answer: B

Solution:

  • Sum of age of 15 students $ =15\times 10=150,yr $ Average age of 16 people $ =16\times 11=176,yr $ Age of teacher $ =176-150=26,yr $
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