As the Shmoo Recording Studio raised CD production from 3 million units to 5 million units, this was forced to discount CD prices down by $18 to $15. Then price elasticity of demand for Shmoo CDs is as: (w) 0.022. (x) 0.36. (y) 1.0. (z) 2.75.
Can anybody suggest me the proper explanation for given problem regarding Economics generally?