SSC GD Constable previous year question
The average age of 48 students of a class is 22 years. If the age of the teacher is also included, the average age of the whole group becomes 23 years. The age (in years) of the teacher is:
Asked in SSC GD Constable 2025: 04 Feb 2025 Shift 2 · Quantitative Aptitude
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Correct answer: (B) 71
Total age of 48 students = 48×22 = 1056. Total for 49 people = 49×23 = 1127. Teacher's age = 1127−1056 = 71.
हिंदी में प्रश्न
एक कक्षा के 48 छात्रों की औसत आयु 22 वर्ष है। यदि शिक्षक की आयु भी शामिल कर ली जाए, तो पूरे समूह की औसत आयु 23 वर्ष हो जाती है। शिक्षक की आयु (वर्षों में) क्या है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 71
48 छात्रों की कुल आयु = 48×22 = 1056। 49 व्यक्तियों का कुल = 49×23 = 1127। शिक्षक की आयु = 1127−1056 = 71।
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