SAT Math Practice Question #26131 - SATify | SATify

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SAT Math Practice Question #26131 - SATify | SATify

#26131

algebra

Relative Motion

medium

120 sec

For real numbers $x$ and $y$ ,

\frac{\frac{1}{x} + \frac{1}{y}}{\frac{1}{x} - \frac{1}{y}} = 1997.

What is $\frac{x + y}{x - y}$ ?

A.

$- 1997$

B.

$- \frac{1}{1997}$

C.

$\frac{1}{1997}$

D.

$1$

E.

$1997$