Not really a 700 question.
Not really a Number Property question, this should be tagged as a Word Problem
Integer constraints are commonly tested on the GMAT
This problem is meant to deal with exactly that
I suggest always simplifying first
3x + 8y = 22
And then x = 22 - 8y / 3
Only 2 works here
By your statement "Only 2 works here
", do you mean statement #2? In other words, do you mean to imply that (B)
is the answer? If not, it's not clear to me what you think the answer is. Furthermore, I would argue that introducing algebra into this problem doesn't necessarily facilitate the solution, and for some students, may confuse them.
Magoosh Test Prep