SSC GD Constable previous year question
In a group of 35 students, the average age is 15 years. When the teacher's age is included, the average age of the group increases by 1.25 years. Find the teacher's age (in years).
Asked in SSC GD Constable 2025: 07 Feb 2025 Shift 2 (Afternoon) · Quantitative Aptitude
Tap an option to check your answer.
Show answer and explanation
Correct answer: (B) 60
New average = 16.25 for 36 people, total = 585. Old total (35 students) = 525. Teacher's age = 585 − 525 = 60.
हिंदी में प्रश्न
एक समूह में 35 विद्यार्थियों की औसत आयु 15 वर्ष है। जब शिक्षक की आयु को शामिल किया जाता है, तो समूह की औसत आयु में 1.25 वर्ष की वृद्धि हो जाती है। शिक्षक की आयु (वर्ष में) कितनी है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 60
नया औसत = 16.25, 36 लोगों के लिए, कुल = 585। पुराना कुल (35 विद्यार्थी) = 525। शिक्षक की आयु = 585 − 525 = 60।
More solved Quantitative Aptitude questions
- The average age of 40 students in a class is 12 years. If the teacher's age is also included, the average age of the entire group becomes…
- Find the third proportional of x²·⁵/y¹·⁵ × z³·⁵ and y⁰·²⁵/x⁰·²⁵ × z⁻⁰·²⁵.
- Krish has ₹1224. He divided it between his two sons Veer and Nitin and asked them to invest it at 4% annual compound interest. It was…
- Pramod sold 154 chairs and made a profit equal to the selling price of 54 chairs. What is his profit percentage?
- A salesman offers a discount scheme of 'Buy 25 and get 5 free' on the purchase of notebooks in his shop. He professes that a notebook…
- If the mean proportional of 18 and 98 is 2A + 6, the value of A is: