SSC GD Constable previous year question
The average age of 35 students in a group is 15 years. When the teacher's age is included, the average age of the group increases by 1.25 years. What is the teacher's age (in years)?
Asked in SSC GD Constable 2025: 07 Feb 2025 Shift 2 · Quantitative Aptitude
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Correct answer: (B) 60
New average = 16.25; teacher's age = (36×16.25) − (35×15) = 585 − 525 = 60.
हिंदी में प्रश्न
एक समूह के 35 विद्यार्थियों की औसत आयु 15 वर्ष है। जब शिक्षक की आयु शामिल की जाती है, तो समूह की औसत आयु 1.25 वर्ष बढ़ जाती है। शिक्षक की आयु (वर्षों में) कितनी है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 60
नया औसत = 16.25; शिक्षक की आयु = (36×16.25) − (35×15) = 585 − 525 = 60।
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