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 Pick one.
A) x = y + z	B) 2x = y + z	C) x = 2y + z	D) x = y + 2z	E) None of these
Explanation:   X =((3y+3z)/6)   or   2X= y + z   Answer: Option 2x = y + z
<result>B</result>
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