Teine kodutöö aines Mikroökonoomika II
3*p = 105
p* = 35
q* = 22,5
p
S
50
35
2
0
D
22, 75 q
5
Producer surplus:
((35 – 20)*22,5)/2 = 168,75
Consumer surplus:
((50-35)*22,5)/2 = 168,75
Total welfare:
168,75 + 168,75 = 337,5
EXERCISE N. 2
When the price of apple juice rises by 3%, the quantity demanded drops by 8%. Then, demand of for
apple juice is elastici? Explain if yes or not and show with the calculation.
Demand for juice is elastic. Proof (calculated by midpoint formula):
(0,92-1)/((0,92+1)/2)
E = -0,833/0,296 = -2,81; |E|= 2,81
= (1,03-1)/((1,03+1)/2)
Price elasticity of demand is bigger than 1, therefore demand is elastic.
EXERCISE N. 3
If my income increases by 12%, then quantity of public transportation demanded drops by 6%. I can
annaabi.ee 
