Example
The demand for cookies follows the following equation: `Q_D = 10 - 2P`.
Solving for P: $$ \begin{align*} Q_D &= 10 - 2P \\ 2P &= 10 - Q_D \\ P &= \frac{10 - Q_D}{2} \end{align*} $$
The inverse demand is `P = \frac{10 - Q_D}{2}`.
Question
The demand for cookies follows the equation `Q_D = 7200 - 60 P`.
What is the expression of the inverse demand function?
Let's transform the demand function into the inverse demand function. $$ \begin{align*} Q_D &= 7200 - 60 P \\ 60 P &= 7200 - Q_D \\ P &= \frac{7200 - Q_D}{60} \end{align*} $$
The inverse demand function is `P = \frac{7200 - Q_D}{60}`.