The average weight of a class of 22 students is 42 kg. If 2 new students of weight 33 kg and 39 kg are added to the class, then what will be the new average weight of 24 students?

Correct option is A

Given:

average weight of 22 student =42kg

weight of two new student = 33kg,39kg

Formula Used:

total weight = average weight $$\times$$ number of students

Solution:

total weight of 22 student =42$$\times$$22

= 924kg

total weight of 24 student = 924kg+33kg+39kg

                                        =996kg

average weight of 24 students =996kg​$$\div$$24

                                               =41.5kg

so, new average weight =41.5kg