Bunuel wrote:
If A = 7x/5y, with y ≠ 0, what is the value of A?
(1) x = 10y
(2) x = 5/7
This is a simpleQ.
\(A = \frac{7x}{5y}\) and we need to find A.
(1) x = 10y. If we substitute the value of x, the y cancels out(note y ≠ 0 is given!
and we can find A.Sufficient. (2) x = 5/7 when substituted leaves y which is a variable in the result. Hence A is not determined.Insufficient.
HenceOption (A) is
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