Question

If X+Y=50 , Y+Y+Y=120, X+Z=35 , then Z=??

Answer 1

y+y+y=120
3y=120
y=40
therefore, x+40=50
x=10
hence 10+z=35
z=35-10
z=25

hope it helps

Answer 2

Let's solve them one by one:

Given,

Y+Y+Y=120

>>>  3Y=120

>>> Y = 120/3

>>>Y = 40

Substituting the value of Y in:

>>>X+Y=50

>>>X+40=50

>>>X=50-40

>>>X=10

Substituting the value of X in the equation:

X+Z=35

>>> 10+Z=35

>>> Z=35-10

>>> Z=25





HOPE THIS HELPS!