SSC GD Constable previous year question
The average age of 39 students of a class is 39 years. If the age of the teacher is also included, the average age of the whole group becomes 40 years. Find the age of the teacher (in years).
Asked in SSC GD Constable 2025: 05 Feb 2025 Shift 3 (Evening) · Quantitative Aptitude
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Correct answer: (D) 79
Teacher's age = new average + n×(increase) = 40 + 39×1 = 79 years.
हिंदी में प्रश्न
एक कक्षा के 39 विद्यार्थियों की औसत आयु 39 वर्ष है। यदि शिक्षक की आयु भी सम्मिलित कर ली जाए, तो संपूर्ण समूह की औसत आयु 40 वर्ष हो जाती है। शिक्षक की आयु (वर्ष में) ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 79
शिक्षक की आयु = नया औसत + n×(वृद्धि) = 40 + 39×1 = 79 वर्ष।
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