A new student having weight 47 kg join a class of 41 students and the average weight of the class reduces by 1.5 kg. What is the new average weight of the class?

Weight of new student = 47 kg

Initial number of students = 41

Reduction in average weight = 1.5 kg

When the new student joins, the average weight of the class decreases,

which means the initial average weight was higher than the new student’s weight.

The reduction in average weight can be used to calculate the initial average weight.

Total Reduction = $$41\times1.5= 61.5\:kg$$

Initial Average = $$47+61.5=108.5\:kg$$​​