Solve Each Equation for D $D = \frac { Q X } { Q + X }$

Multiple Choice

Solve each equation for D . Match each equation with the corresponding solution.
- $D = \frac { Q X } { Q + X }$

A) $\frac { D } { Q } = \frac { X } { Q + X }$
B) $\frac { 1 } { D } = \frac { 1 } { Q } - \frac { 1 } { X }$