Question

MNC

這題怎麼寫，算了很多答案都不是2
（老師給的答案是2）

-0.50
Price (dollars per popsicle)
0.30
0
15
25
5) The figure shows the demand curve for popsicles.
The arc price elasticity of demand when the price of a
popsicle increases from $0.30 to $0.50 is
A) 0.
D
B) 1.
C) 1/2.
D) 2.
Quantity (popsicles per day)

經濟學 彈性