Question

Average weight of 30 students of a class is 30 kg. Average weight of first 15 students of the class is 32 kg.
What is the average weight of remaining students?
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Answer 1

Answer:

The answer is 28.66

Step-by-step explanation:

Let,

the weights of 30 students be x

According to the first condition,

x/30=30

so,x=900

Therefore the sum of weights of all students is 900

Now,

according to second condition,

it is a part of x so let it be x1

x1/15=32

x1=470

Hence,

the average weight of remaining students is 430/15=28.66