Respuesta :

Price Elasticity = % Change in quantity demanded / % Change in Price

Original demand - New demand =
25 - 15 = 10

10/ 25 = 0.4%

Original price - New price =
4 - 5 = -1

-1/4 = -0.25%

0.4%/-0.25%
= -1.6

Price Elasticity = -1.6 %