Question

The average weight of 25 students of section A of a class is 51 kg whereas average weight of 35 student of section B is 54kg.find the average weight of 60 students of this class.

Answer 1

Average weight of 60 students= (51+54)/2 =105/2=52.5kg
Please check the answer before doing as the answer may be wrong.I am not sure about the answer.

Answer 2

Answer:

52.75 kg

Step-by-step explanation:

Given that:

The average weight of section A which compromises of 25 students = 51 kg

The average weight of section B which compromises of 35 students = 54 kg

Also,

$Average=\frac {Sum\ of\ observations}{Number\ of\ observations}$

Thus,

Weight of section A students = Average × Number of students = 51 kg × 25 = 1275 kg

Weight of section B students = Average × Number of students = 54 kg × 35 = 1890 kg

Thus total Weight of the 60 students of both sections = 3165 kg

Thus,

$Average=\frac {Sum\ of\ observations}{Number\ of\ observations}$

$Average=\frac {3165\ kg}{60}$

The average weight of 60 students of this class = 52.75 kg