Answer:
The market of good X will experiment a decrease of 50 units in the untis available as will drop to 100 units from 150
Explanation:
Price Qd Qs
10 220 90
11 200 100
12 180 130
13 150 150
14 120 190
15 80 260
At a celling of $11 dollars the people would demand for 200 untis but suppliers will only be willing to produce and sell 100 untis.
The equilibrium price of $13 match for 150 units
Therefore,the decrease will be 50 units