RRB Group D practice question
The average weight of 10 students increases by 1 kg when one student weighing 61 kg is replaced by a new student. Find the weight of the new student.
From a RRB Group D Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (A) 71 kg
New weight = old weight + n×d = 61 + 10×1 = 71 kg.
नया वजन = पुराना वजन + n×d = 61 + 10×1 = 71 किग्रा।
हिंदी में प्रश्न
10 विद्यार्थियों का औसत वजन 1 किग्रा बढ़ जाता है जब 61 किग्रा वजन वाले एक विद्यार्थी के स्थान पर एक नया विद्यार्थी आ जाता है। नए विद्यार्थी का वजन ज्ञात करें।
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उत्तर और व्याख्या देखें
सही उत्तर: (A) 71 किग्रा
New weight = old weight + n×d = 61 + 10×1 = 71 kg.
नया वजन = पुराना वजन + n×d = 61 + 10×1 = 71 किग्रा।
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