Question #104298

Suppose the demand curve is described by the equation Q = 400 - 10P, where Q is the quantity

demanded and P is the price of the good. At price P = 30, the quantity demanded is

a. 400

b. 300

c. 200

d. 100

demanded and P is the price of the good. At price P = 30, the quantity demanded is

a. 400

b. 300

c. 200

d. 100

Expert's answer

**Answer**

D. 100

**Explanation**

Q= 400- 10P

To determine the quantity demanded given, price P, we need to replace P in the question.

So in the equation,

Q=400- 10P, replace P which is 30

Q= 400- 10(30)

Â =400- 300

Â =**100**

Thus, the quantity demanded is **100**.

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