The average of six numbers is x and the average of three of these is y – McqOptions

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1.	The average of six numbers is x and the average of three of these is y. If the average of the remaining three is z, then ?
A.	None of these
B.	x = y + z
C.	2x = y + z
D.	x = 2y + 2z
Answer» D. x = 2y + 2z

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