Question

Mean weight of a class of 15 students is 45kg. Two more students weighing 35kg

and 38kg respectively join the class. What is the mean weight of the class now?​

Answer 1

Answer:

Mean Weight= 45 out of 15 students

Therefore total weight = 15 × 45 = 675

Add two students weighing 35, 38 to 675= 675+35+38 = 748

Therefore, Mean = 748/17

                               = 44Kg

So new mean weight of class is 44Kg