[" The average of "2,7,6" and "x" is "5"...

[" The average of "2,7,6" and "x" is "5" and the average of "18,1,6,x" and "y" is "10." What is "],[" the value of "y?],[[" (a) "5," (b) "10," (c) "20," (d) "30]]

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