Answer:
[tex]Q_x=5[/tex]
Explanation:
Given that,
The formula is :
[tex]Q_x=20-5p[/tex] ....(1)
Where p is price
We need to find the price elasticity
Put p = 3 units in equation (1)
[tex]Q_x=20-5(3)\\\\=20-15\\\\=5[/tex]
Hence, the price elasticity is 5.
