UP Police Constable practice question
The average weight of 10 students in a class is 42 kg. When the weight of the teacher is included, the average becomes 44 kg. Find the weight of the teacher.
From a UP Police Constable Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) 64 kg
Total weight of 10 students = 10×42 = 420 kg; total weight with teacher (11 people, avg 44) = 11×44 = 484 kg; teacher's weight = 484−420 = 64 kg. This matches the 64 kg option.
हिंदी में प्रश्न
एक कक्षा के 10 विद्यार्थियों का औसत वजन 42 kg है। शिक्षक का वजन शामिल करने पर औसत 44 kg हो जाता है। शिक्षक का वजन ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 64 kg
10 विद्यार्थियों का कुल भार = 10×42 = 420 किग्रा; शिक्षक सहित कुल भार (11 लोग, औसत 44) = 11×44 = 484 किग्रा; शिक्षक का भार = 484−420 = 64 किग्रा। यह 64 किग्रा वाले विकल्प से मेल खाती है।
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