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.	x = y + z
B.	2x = y + z
C.	3x = 2y - 2z
D.	none of these
Answer» C. 3x = 2y - 2z

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