Verified by Ajay Kumar
The average weight of 30 students is 60 kg. When the teacher's weight is included, the average becomes 61 kg. What is the weight of the teacher?
91 kg
90 kg
89 kg
88 kg
Answer: A
Total weight of 30 students = 30 × 60 = 1800 kg. Total weight of 31 people including the teacher = 31 × 61 = 1891 kg. Teacher's weight = 1891 − 1800 = 91 kg.
30 विद्यार्थियों का औसत वजन 60 किलोग्राम है। शिक्षक का वजन शामिल करने पर औसत वजन 61 किलोग्राम हो जाता है। शिक्षक का वजन कितना है?
91 किलोग्राम
90 किलोग्राम
89 किलोग्राम
88 किलोग्राम
उत्तर: A
30 विद्यार्थियों का कुल वजन = 30 × 60 = 1800 किलोग्राम। शिक्षक सहित 31 लोगों का कुल वजन = 31 × 61 = 1891 किलोग्राम। शिक्षक का वजन = 1891 − 1800 = 91 किलोग्राम।
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