The average of the 10 numbers is -10.If the sum of 6 of them is 100,what is the average of the other 4?

1. The average of the 10 numbers is -10.If the sum of 6 of them is 100,what is the average of the other 4?

[BKB Senior Officer-2012 : 2012]

1. -100

2. -50

3. o

4. 50

Answer

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