The X
Level
pending
If:
X+2 Y+Z+A= 2900
X+Y= 700
Z+Y= 1000
A= 2 Z
Then what is the value of X ?!!!
The answer is 300.
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1 solution
x + 2y + z + a = 2900
=> x + 2 (700 - x) + (x + 300) + 2 (x + 300) = 2900
[since z + (700-x) = 1000 and a = 2z]
=> x = 300