Question

Given the demand equation, Qdx=100-
10Px, find Quantity of commodity X
demanded , if Px= 7.
40
30
O
70
170​

Answer 1

Answer:

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40

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Answer 2

Given:

Qdx=100-10Px

To find:

The value of Qdx when Px is 7

Solution:

The value of Qdx when Px is 7 is 30.

We can find the value by following the given steps-

We know that the given equation shows the relationship between the quantity demanded of good x with its price.

We are given that the demand equation is as follows-

Qdx=100-10Px

Now, we also know that the value of Px=7.

So, to find the value of Qdx, we need to substitute the value of Px in the given demand equation.

So, the value of Qdx when Px=7 is

Qdx=100-10×7

Qdx=100-70

Qdx=30

So, 30 units are demanded when the price is 7.

Therefore, the value of Qdx when Px is 7 is 30.