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Posted by Carl on Saturday, September 21, 2013 at 2:15pm.

The average of 20,70 and x is 40. If the average of 20,70, x and y is 50, then y= a. 30 b. 60 c. 70 d. 80 e. 100

20 + 70 + x = 120 x = 30 120 + y = 200 y = 80

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