The substitution effect will never induce a consumer to buy more of a good when its price increases

Which group came out of World War I (1914–18) better off?

(a) Industrial and agricultural workers (b) Creditors (c) Individuals depending on investment (d) People living on fixed incomes

Explain why wage rates might rise at Joe's Quik-Print Shop if Joe replaces his aging copy machines with state-of-the-art copy machines