if the average of three numbers x-4,y-3 and z-2 is 5,then the value of x+y+z is?
Answers
Answer:
There are two ways of solving the given Question
Method-1
Solve all the three equations using any of the following ways:
Elimination Method
Substitution Method
Cross Multiplication Method
After solving the equations you will get the values of x, y, and z
Then apply the formula to evaluate the Average.
Method-2
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
Answer:
24
Step-by-step explanation:
As there average is 5 so,
x-4=5
y-3=5
z-2=5
So now we will take numbers to RHS to get values of x, y and z .
so we get
x = 4+5 = 9
y = 3+5 = 8
z = 2+5 = 7
As the question is to add x+y+z ,so we will put values instead of x, y, z
So we get it like this: