
Imagine that you have been given a job as an economic advisor to evaluate a certain competitive US manufacturing industry. Your (accurate) statistical analysis indicates the market is characterized by demand of Qd = 300 – 3P and supply of Qs = 2P – 50.
> Solve for
> Depict the supply curve S1 and demand curve D1 on the usual P, Q diagram. Label all relevant intercepts (including two intercepts for the demand curve and one intercept for the supply curve). Clearly indicate and label the
> Graphically indicate the areas of
> Compute the values of Consumer Surplus (CS1) and Producer Surplus (PS1), clearly indicating the units that CS and PS are measured in.
Continuing your analysis of the competitive US manufacturing industry from Question 1, with demand of Qd = 300 – 3P and supply of Qs = 2P – 50, suppose an increase in labor costs causes the supply curve to decrease, shifting the curve up by $20 for every given quantity Q.
- Determine the new supply equation. (Hint: What approach have you used to model taxes and subsidies in previous assignments?)
- Solve for equilibrium price P2 and quantity Q2.
- Depict the original supply S1, the new supply S2, and the original demand D1 on the usual P, Q diagram. Label all intercepts (including two intercepts for the demand curve and one intercept for the supply curve). Clearly indicate and label the new market equilibrium.
- Graphically indicate the areas of Consumer Surplus (CS2) and Producer Surplus (PS2) that resulted from the new market equilibrium.
- Compute the values of Consumer Surplus (CS2) and Producer Surplus (PS2) associated with the new market equilibrium, clearly indicating the units that CS and PS are measured in.
- What was the impact of the shift in the supply on consumers and producers, based on the comparison of CS and PS in Questions 1 and 2? In other words, were each of these two groups of market participants hurt or made better off by change? Why? (Narrative response; suggested length of three to four sentences or one paragraph.)
Make sure you draw the graph manually , check the formula properly and recheck your answers...

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