Question

X+y=10, y+z=7 and z+x=9, the average (arithmetic mean) of x,y and z is?

Answer 1

${\huge {\mathfrak {Answer :-}}}$

_________

x + y = 10

y + z = 7

z + x = 9

So, x + y + y + z + z + x = 10 + 7 + 9

Or, 2(x + y + z) = 26

Or, x + y + z = 13.

Thus, the average is

= 13/3.

________

Thanks..

Answer 2

Step-by-step explanation:

x + y = 10

y + z = 7

z + x = 9

So, x + y + y + z + z + x = 10 + 7 + 9

Or, 2(x + y + z) = 26

Or, x + y + z = 13.

Thus, the average is

= 13/3.

________.