Q. 9 A25.0( 4 Votes )

# If the mean of numbers 6, 7, x, 8, y, 14 is 9, then

A. x + y = 21

B. x + y = 19

C. x – y = 21

D. x – y = 19

Answer :

Mean is given by adding the data values or variables and dividing them by the number of data values or variables.

So,

⇒

⇒ 54 = 35 + x + y

⇒ 54 – 35 = x + y

⇒ x + y = 19

Thus, option (B) is correct.

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