53. There are two sections a and b of a class, consisting of 36 and 44 students respectively. If the average weight of section a is 40kg and that of section b is 35kg, find the average weight of the whole class
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student of A is 36*40kg=1440kg
student of B is 44*35kg=1540kg
average of whole class is 1540+1440/36+44
=2980/60=49.66kg
student of B is 44*35kg=1540kg
average of whole class is 1540+1440/36+44
=2980/60=49.66kg
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