Consumer and Resource Management
This domain tests consumer economics and resource management: budgeting, credit, saving, insurance, housing, and consumer protection. Expect calculation items plus scenario questions that ask which consumer action is wisest.
Core rules
- Budget: income minus fixed and variable expenses equals surplus or deficit. Fixed costs include rent and insurance premiums; variable costs include food and utilities. An emergency fund of 3–6 months’ essential expenses is a common planning target.
- Opportunity cost is the value of the next-best alternative forgone.
- Simple interest: I = P × r × t. Compound interest: A = P(1 + r/n)^(nt). APR is the annual percentage rate on credit; APY reflects compounding and is usually higher.
- Credit-score factors: payment history (35%), credit utilization (30%), length of history (15%), new credit (10%), credit mix (10%).
- Insurance terms: premium (amount paid for coverage), deductible (amount paid before the insurer pays), copayment (fixed fee), coinsurance (percentage share).
Worked example
You invest $1,000 at 5% annual interest for 3 years. Simple interest: $1,000 × 0.05 × 3 = $150, so the total is $1,150. Compounded annually: $1,000(1.05)^3 = $1,157.63. The $7.63 difference is compounding. If a credit card advertises 0% for 12 months but defers interest, paying off the balance after the promo period can trigger retroactive interest-read the terms.
Traps that cost marks
- Confusing APR with APY.
- Treating a minimum credit-card payment as a payoff plan.
- Mixing up deductible and premium.
- Forgetting that “buy now, pay later” is still debt.
- Counting a want as a need without examining trade-offs.