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The average of six numbers is X and the average of three of these is Y.
Question 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
Feedback
X =((3y+3z)/6)
or 2X= y + z
C.
x = 2y + z
D.
x = y + 2z
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