InterviewSolution
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The Mean Weight Of A Class Of 35 Students Is 45 Kg. If The Weight Of The Teacher Be Included, The Mean Weight Increases By 500 G. Find The Weight Of The Teacher? |
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Answer» MEAN WEIGHT of 35 students = 45 KG. Total weight of 35 students = (45 × 35) kg = 1575 kg. Mean weight of 35 students and the teacher (45 + 0.5) kg = 45.5 kg. Total weight of 35 students and the teacher = (45.5 × 36) kg = 1638 kg. Weight of the teacher = (1638 - 1575) kg = 63 kg. Hence, the weight of the teacher is 63 kg. Mean weight of 35 students = 45 kg. Total weight of 35 students = (45 × 35) kg = 1575 kg. Mean weight of 35 students and the teacher (45 + 0.5) kg = 45.5 kg. Total weight of 35 students and the teacher = (45.5 × 36) kg = 1638 kg. Weight of the teacher = (1638 - 1575) kg = 63 kg. Hence, the weight of the teacher is 63 kg. |
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