THE MEAN WEIGHT OF 34 STUDENTS OF CLASS 9TH OF A SCHOOL IS 42kg. IF THE WEIGHT OF THE TEACHER BE INCLUDED, THE MEAN RISES BY 400gm. FIND THE WEIGHT OF THE TEACHER.
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Teacher 's weight is=(42. 4*35)-(42*34) kg=56 kg
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Answer:
the ans will be 56 kg....
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