Answer:
Q = 2,900 units
x = $50
Step-by-step explanation:
At the equilibrium point the quantity demanded and supplied at the equilibrium price are the same. The demand and supply functions are:
[tex]D: Q=590 - 60x\\S: Q=400+50x[/tex]
When the quantity is the same, the selling price x is:
[tex]5900 - 60x=400+50x\\x=\frac{5,500}{110}\\ x=\$50[/tex]
And the equilibrium quantity is:
[tex]Q = 400+50*50\\Q=2,900\ units[/tex]