SSC GD Constable Premium Mock Test 01 – Question 47

Question:

The average age of 54 students of a class is 37 years. If the age of the teacher is also included, the average age of the whole group becomes 38 years. The age (in years) of the teacher is:

एक कक्षा के 54 छात्रों की औसत आयु 37 वर्ष है। यदि शिक्षक की आयु भी शामिल कर ली जाए, तो पूरे समूह की औसत आयु 38 वर्ष हो जाती है। शिक्षक की आयु (वर्षों में) क्या है?

Options:

  • 92
  • 95
  • 97
  • 90
  • 92
  • 95
  • 97
  • 90

Correct Answer: (a)

Explanation:

Detailed Explanation: Teacher’s age = (55 × 38) – (54 × 37) = 2090 – 1998 = 92 years (or 38 + 54 × 1 = 92).

विस्तृत व्याख्या: शिक्षक की आयु = (55 × 38) – (54 × 37) = 2090 – 1998 = 92 वर्ष।

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top