If 3x + 6y + 9z = 
, 6x + 9y + 3z = 
and 18x + 27y − z = 
, then what is the value of 75x + 113y?
Show answer & explanation
Correct answer: A
Explanation
The correct option is 1.
3x + 6y + 9z = .
or, x + 2y + 3z = 
............... (1)
6x + 9y + 3z =
or, 2x + 3y + z = 
............... (2)
18x + 27y − z =
or, 72x + 108y − 4z = 
............... (3)
By adding (1), (2) & (3) :
75x + 113y = 
A is correct choice.