At​ Roy's Music​ Shack, when the price of CDs is

​$13

​,

800

are demanded.

When the price of CDs is

​$14

​,

600

are demanded.

Using the averages of the two prices and​ quantities, the price elasticity of demand for CDs is

nothing

.

​(Round

your answer to one decimal​ place, and express your answer in absolute

value.​)