Multiple choice

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

  1. More than the average weight of students in group A

  2. More than the average weight of students in group C

  3. Less than the average weight of students in group C

  4. Cannot be determined
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The average weight of group D depends on the individual weights of students in groups A and C. Since no information about the weights is provided, the combined average cannot be determined.

AI explanation

The average weight of the combined group D depends on the specific average weights of groups A and C. The problem provides the number of students in each group but gives no information about their actual weights or average weights. Without knowing the average weights of groups A and C, the average weight of group D cannot be calculated. Therefore, the average weight of group D cannot be determined.

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