Let's take each statement one by one.M7MBA wrote:What is the value of \(x\)?
(1) \(\dfrac{x}{7} + 5y = 109\)
(2) \(175y = 763(5 - x)\)
[spoiler]OA=C[/spoiler]
Source: Veritas Prep
Needless to state that each statement alone is sufficient to answer the question. Let' take both statements together.
The linear equation \(\dfrac{x}{7} + 5y = 109\) is manipulated to x = 763 - 35y and the linear equation \(175y = 763(5 - x)\) is manipulated to 763x/5 = 763 - 35y. Since RHS of both the equations are equal, we have x = 763x/5. The only possible value for x is 0. Sufficient.
The correct answer: C
Hope this helps!
-Jay
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