Suppose that an employee at a coffee shop is willing to work 30 hours per week when she is paid $11.00per hour.When she is offered a raise to...

Suppose that an employee at a coffee shop is willing to work 30 hours per week when she is paid $11.00 per hour. When she is offered a raise to $16.00 per hour, she is willing to work 40 hours per week. 

Her price elasticity of supply is   . (Note: use the midpoint method and give your answer to two decimal places.)