[cant be determined in bot...] There are 3 classes having 20, 24 and 30 students respectively having average marks in an examinatio

There are 3 classes having 20, 24 and 30 students respectively having average marks in an examination as 20,25 and 30 respectively. The three classes are represented by A, B and C and you have the following information about the three classes.1) In class A highest score is 22 and lowest score is 182) In class B highest score is 31 and lowest score is 233) In class C highest score is 33 and lowest score is 26.If five students are transferred from A to B, what can be said about the average score of A; and what will happen to the average score of C in a transfer of 5 students from B to C ?

definite decrease in both cases

cant be determined in both cases

definite increase in both cases

will remain constant in both cases

Explanation:

Class A average is 20. And their range is 18 to 22

Class B average is 25. And their range is 23 to 31

Class A average is 30. And their range is 26 to 33

If 5 students transferred from A to B, As average cannot be determined but Bs average comes down as the highest score of A is less than lowest score of B.

If 5 students transferred from B to C, Cs average cannot be determined the Bs range fo marks and Cs range

of marks are overlapping.

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