The average age of 54 students of a class is 37 years.
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 विद्यार्थियों की औसत आयु 37 वर्ष है। यदि शिक्षक की आयु को भी सम्मिलित कर ली जाए, तो संपूर्णं समूह की औसत आयु 38 वर्ष हो जाती है। शिक्षक की आयु (वर्षों में) ज्ञात कीजिए ?
Detailed Solution & Logic
Correct Answer:
92
Total age of 54 students = $ 54 \times 37 = 1998 $
Total age including teacher = $ 55 \times 38 = 2090 $
Teacher's age = 2090 - 1998 = 92
92 years
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