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The average weight of a class of 24 students is 30kg. When the weight of the teacher is also included, the average weight increases by Tkg.What is the weight of the teacher? |
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Answer» Step-by-step explanation: X/24 = 30, average of class STUDENTS WEIGHT X = 720 (720 + y) /25 = 31, average of class students and teacher weight 720 + y = 775 y = 775 - 720 y = 55 Weight of the teacher is 55kg |
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