In a class there are three groups A B and C If one student from group A and two students from group ...........

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In a class, there are three groups A, B and C. If one student from group A and two students from group B are shifted to group C, then what happens to the average weight of the students of the class?

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Complete-Test, Previous year (2020)

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It increases.

It decreases.

It remains the same.

No conclusion can be drawn due to insufficient data.

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Explanation:

Sol. Ans.(c).

Class Average will remain same as nobody is coming in or going out of the class. So average weight equilibrium will be same as before shifting. A change can happen only if someone is added to the group(s) or someone leaves the group(s), not otherwise.