Lesson preview · Production Possibilities Curve
Drawing the PPC
~5 min · Free to read
Nations face a famous trade-off economists call guns vs butter: should a country build more tanks or more food, more bombs or more bandages? Every dollar spent on one is a dollar not spent on the other. Economists draw this trade-off as a graph called the Production Possibilities Curve (PPC) — a simple picture that captures scarcity, choice, and opportunity cost in one curve.
Key Term
Production Possibilities Curve (PPC)
A graph showing the maximum combinations of TWO goods an economy can produce using all its resources efficiently. Also called the Production Possibilities Frontier (PPF).
Every point on the curve has a label. On the curve = efficient (using all resources). Inside the curve = inefficient (wasting resources, maybe unemployment). Outside the curve = unattainable (can’t do with current resources and tech).
Tip
The three zones
• ON the curve → efficient • INSIDE → inefficient (workers idle, factories empty) • OUTSIDE → impossible (for now — economic growth can change this)
Check yourself · no marks
An economy with high unemployment is currently producing at a point INSIDE its PPC. What does that tell us?
Commit to one first. Guessing and being wrong beats reading the answer cold.
Worked Example
A small country produces only wheat and phones. Using all its resources, it can produce these combinations:
• A: 100 wheat, 0 phones • B: 90 wheat, 30 phones • C: 70 wheat, 50 phones • D: 40 wheat, 65 phones • E: 0 wheat, 75 phones
Classify these points: (1) 80 wheat & 45 phones, (2) 60 wheat & 40 phones, (3) 50 wheat & 70 phones.
Practice · 1 / 4
A point INSIDE the production possibilities curve represents:
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