Question

if X:Y=2:3 & Y=4:5 and average of x,yz is 105 then find x+z-y​

Answer 1

Answer:

Given equations are:

x+y=6 _____(1)

y+z=7 _____(2)

z+x=9 _______(3)

Adding all the three equations, we get

2(x+y+z)=22

⇒x+y+z=11

To find the Average,

Apply the formula and get the required answer.

⇒Average=x+y+z3

⇒Average=113=3.6