Financial decision-making involves translating prices, discounts, taxes, fees, payment schedules, interest rates, and inflation into comparable quantities such as total cost, net gain, cost per unit, and effective rate. Using percentages, proportional reasoning, simple and compound interest, and tables, graphs, or formulas, a learner compares purchasing, saving, borrowing, and basic investment alternatives while accounting for time and recognizing that a lower periodic payment can result in a higher total cost; continuous compounding, advanced risk models, and complex financial instruments are not included.
To evaluate a financial decision, translate each option into a comparable quantity—usually the total cost. Apply discounts and taxes in the correct order, then compare the results.
A laptop has a listed price of 900$.
Which option costs less?
The discount is
Subtract the discount from the listed price:
So, the price before tax is 765$.
The tax is based on the discounted price:
Add the tax:
Therefore, the total cost of Option A is
There are payments of 82$:
Add the setup fee:
Therefore, the total cost of Option B is
Subtract the lower total from the higher total:
The payment plan costs 197.80}$ more overall.
Even though 82$ per month may seem manageable, the total cost is higher. If the buyer can afford to pay immediately, Option A is the better financial decision because it costs less in total.
Click a topic below to practice the foundational skills you'll need, learn the steps, or master this skill
Earned ?