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If the average of the numbers 6, 7, x, 8...

If the average of the numbers 6, 7, x, 8, y, 14, be 9, then

A

`x+y = 21`

B

`x-y=21`

C

`x+y=19`

D

`x-y=19`

Text Solution

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The correct Answer is:
C
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