In 1983, a pair of jeans cost $66.35. If a pair of jeans costs $118.10 today, what is the CPI?

Use the CPI formula: (current price ÷ base-year price) × 100. Substituting the prices gives ($118.10 ÷ $66.35) × 100 ≈ 178. The CPI is about 178, so the correct choice is 178.

AI-written and checked against the verified answer.