The fraction of total income that is saved equals the _____ propensity to save

If 11 workers can produce 53 units of output while 12 workers can produce 56 units of output, what is the marginal product of the 12th worker?

A) 0.16 B) 3 C) 4.67 D) 36

Explain how the gold standard operated

What will be an ideal response?