The relationship between the cost of living and standard of living is

1. Analyze the question The question asks how the cost of living relates to the standard of living.

2. Explain the concepts

• Cost of living is the amount of money a household needs to buy the goods and services it requires, such as food, housing, transport and education. It is often tracked with the Consumer Price Index (CPI).
• Standard of living is the level of comfort and material well-being a person or household enjoys, meaning the quantity and quality of goods and services they can afford.

3. Step-by-step reasoning

• Suppose your income stays the same.
• If the cost of living falls, prices are lower, so your money buys more goods and services. Your real income rises, and so does your standard of living.
• If the cost of living rises, prices are higher, so the same money buys less. Your real income falls, and so does your standard of living.

So the two move in opposite directions, assuming income is constant.

4. Check each option

• A: Wrong. A rise in the cost of living reduces purchasing power, so the standard of living does not rise with it.
• B: Correct. A lower cost of living means a higher standard of living.
• C: Wrong. It states the opposite of what happens.
• D: Wrong, because B is correct.

5. Exam tip Remember the link as "Cost down, living up." Cost of living and standard of living move inversely when income is fixed. This is the same idea as real income: real income = nominal income ÷ price level.