SSC GD Constable previous year question
The average age of 30 students in a group is 18 years. When the teacher's age is included, the average age of the group increases by 1 year. What is the teacher's age (in years)?
Asked in SSC GD Constable 2025: 05 Feb 2025 Shift 2 · Quantitative Aptitude
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Correct answer: (A) 49
New average = 19 for 31 people, total = 589; original total = 540; teacher's age = 589 − 540 = 49.
हिंदी में प्रश्न
एक समूह के 30 विद्यार्थियों की औसत आयु 18 वर्ष है। शिक्षक की आयु शामिल करने पर समूह की औसत आयु 1 वर्ष बढ़ जाती है। शिक्षक की आयु (वर्षों में) क्या है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 49
नया औसत 31 लोगों के लिए 19 है, कुल = 589; मूल कुल = 540; शिक्षक की आयु = 589 − 540 = 49।
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