Question

the average weight of X Y and Z is 56 Kg if the average weight of X and Y is 46 kg and Y and Z is 52 kg then the weight of Y is​

Answer 1

Answer:

Y=94kg

Step by step explanation:

(X+Y+Z)/3=36

X+Y+Z=36*3

X+Y+Z=108

(X+Y)/2=46

X+Y=46*2

X+Y=98

(Y+Z)/2=52

Y+Z=104

Now,

X+Y+Z=108

X+Y=98

Y+Z=104

So,

X+104=108

X=108-104

=4kg

X+Y=98

4+Y=98

Y=98-4

=94kg

You already got your answer...

Y+Z=104

94+Z=104

Z=104-94

=10kg

Hope it is clear..

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Answer 2

Total weight of X,Y and Z = 56×3 =168 kg ....(1)

Total weight of X and Y = 46×2 = 92 kg .... (2)

Total weight of Y and Z= 52×2 =104 kg .....(3)

X+Y+Z=168 kg

92+Z =168 ( X+Y=92 from2)

Z=168-92

Z= 76kg

Y+Z=104 .. (From3)

Y+76=104

Y = 104-76

Y= 28 kg