A company manufactures two products. Each unit of product X requires 10 machine hours and each unit of product Y requires 4 machine hours. The company's productive capacity is limited to $180,000 machine hours. Each unit of product X sells for $15 and has variable costs of $7. Each unit of product Y sells for $8 and has variable costs of $3. If the company can sell all that it produces of both products, what should the sales mix be?