Bob the Builder hires workers and rents tools The marginal product of another worker is 12 units of output, while the marginal product of another tool is 20 units of output. if workers cost $8 per hour to hire, while tools cost $18, then Bob can increase his profits by O hiring more workers and renting fewer tools O. doing nothing, Bob cannot increase his profits by adjusting his mix of workers and tools. renting more tools and hiring less labor. Read the related chapter View available hints 1) Report an error