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1)The demand and supply curves for bottled water are given by: Qd = 152 - 20P Qs

ID: 1130393 • Letter: 1

Question

1)The demand and supply curves for bottled water are given by: Qd = 152 - 20P Qs = 188P - 4 Q is measured in thousands of bottles of water. Tasks: Use this information to calculate the Consumer Surplus at the equilibrium price. Hint: To answer this question, you need to calculate the equilibrium price and quantity AND the demand choke price. Note: The demand choke price is the price at which quantity demanded is equal to zero. (Do NOT use the $ when entering your answer; just enter a numeric value.)

Explanation / Answer

Q = 152 - 20P

20P = 152 - Q

P = 7.6 - 0.05Q

Demand choke price = $7.6

For equilibrium

Qd = Qs

152 - 20P = 188P - 4

208P = 156

P = 156 / 208 = 0.75

Q = 152 - 20(0.75) = 137 (i.e. Q = 137,000)

CS = 0.5[(7.6 - 0.75) * 137,000]

= 469,225