An increase in the market price of men's haircuts, from $20per haircut to $30per haircut, initially causes a local barbershop to have its employees work overtime to increase the number of daily haircuts provided from 20to 25. When the $30market price remains unchanged for several weeks and all other things remain equal as well, the barbershop hires additional employees and provides 40haircuts per day.What is the short-run price elasticity of supply? ________

(Your answer should have two decimal places.)