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zepelin [54]
3 years ago
15

Quantity demanded is 200 units when the unit price is set at $90. The quantity demanded is 1200 units when the unit price is $40

. Find the demand equation
Mathematics
1 answer:
Naddika [18.5K]3 years ago
6 0

Answer:

Q_n=(2000)-(20)P_n

Step-by-step explanation:

From the question we are told that:

Initial Quantity demanded Q_1= 200 units

Initial demand price P_1=\$90

Final Quantity demanded Q_2= 1200 units

Final demand price P_2=\$40

Generally the  Demand Equation is mathematically given by

 Q_n=a-bP_n

Where

a=Other factors affecting price

b=Slope of the demand curve

Therefore

 Q_1=a-bP_1

 200=a-b(90)

 Q_2=a-bP_2

 1200=a-b(40)

Comparing both above equations

  a=2000

  b=20

Therefore the  Demand Equation is mathematically given by

  Q_n=(2000)-(20)P_n

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