Question

If the mean of 6, 7,x,8,y, 14 is 9, then
A.x+y=21
B. x+y=19
C.x-y=16
D.x-y=21​

Answer 1

According to the question:-

$\frac{6 + 7 + 8 + 14 + x + y}{6} = 9$

then;

$\frac{35 + x + y}{6} = 9$

$54 - 35 = x + y \\ 19 = x + y$

I hope it helps ✌

Answer 2

Answer:

answer is in the attachment