RRB Technician Grade 3 previous year question
The average age of six girls increases by four months, if a 12-year old girl is replaced by a new girl. The age of the new girl is:
Asked in RRB Technician Grade 3 (10 Mar 2026 Shift 3) · Quantitative Aptitude
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Correct answer: (C) 14 years
Total age increase for 6 girls = 6*(4/12) = 2 years, so new girl's age = 12+2 = 14 years.
हिंदी में प्रश्न
यदि एक 12 वर्षीय लड़की के स्थान पर एक नई लड़की को शामिल किया जाता है, तो छह लड़कियों की औसत आयु में चार महीने की वृद्धि हो जाती है। नई लड़की की आयु कितनी है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 14 वर्ष
6 लड़कियों की कुल आयु वृद्धि = 6*(4/12) = 2 वर्ष, अतः नई लड़की की आयु = 12+2 = 14 वर्ष है।
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