The average of 2, 7, 6 and x is 5 and...

The average of 2, 7, 6 and `x` is 5 and the average of 18, 1, 6, `x` and `y` is 10. What is the value of `y` ? (a) 5 (b) 10 (c) 20 (d) 30

A

10

B

30

C

20

D

5

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The correct Answer is:

C

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