Question:

There are 60 students in a class. These students are divided into three groups A, B and C of 15, 20 and 25 students each. The groups A and C are combined to form group D. What is the average weight of the students in group D?

• A

More than the average weight of A

• B

More than the average weight of C

• C

Less than the average weight of C

• D

Cannot be determined

Posted by: Datathri on 14.11.2017

Option D

ANS--D

D)  Ans

Number of students in group D is more then number of students in group A or group C. But there is no information about the weight of students in group A or group C. Hence answer is D.

Answer is B. Since average depends upon number of children. As number of children in Group D are more so average will be more.

Since we do not know the average weight of the class or average weight of each group, we cannot determine average weight of the students in group-D

Hence option D is the correct answer

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