SAT Math Practice Question #35942 - SATify | SATify

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SAT Math Practice Question #35942 - SATify | SATify

#35942

expressions

algebra

medium

60 sec

The given equation relates the positive variables $a, b,$ and $c$ . Which of the following is equivalent to $b$ ?
$\frac{15}{a} = \frac{15}{b} - \frac{15}{c}$

A.

$a + c$

B.

$\frac{a + c}{a c}$

C.

$\frac{a c}{a + c}$

D.

$\frac{a c}{c - a}$