Question 323608
average of 6 numbers = 10
total of thses 6 numbers = 60.
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Average of 4 numbers is 12
total of 4 numbers = 40
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difference of these totals is the total of balance 2 numbers
60-48 = 12
12 is the total of 2 numbers 
so the average = 12/2 = 6
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Average of 2 numbers is 6