Suppose there are two types of employees: Type-A and Type-B. Employers cannot distinguish between the two but know that Type-A employees are more productive. Specifically, the value of a Type-A employee to the firm is $20 and the value of a Type-B employee is $10. The cost of education for Type-A employees is 2e, where e is a year of education; the cost for Type-B employees is 4e. If Type-A employees make up 25 percent of the population, what is the pooling equilibrium?