On a recent shopping trip, Julie spent 85% of her money, and now $75 left. How much did she spend?

When someone spends a portion of their money, the remaining amount represents the unspent portion. If 85% of an initial sum was spent, then 15% of that original amount must be what's left over. In this scenario, the $75 remaining is precisely that 15%. To find the total money someone started with, we can set up a simple equation: 0.15 multiplied by the total amount equals $75. Dividing $75 by 0.15 reveals that the initial sum was $500. Since the question asks how much was spent, we then calculate 85% of that $500, which comes out to $425.

Understanding percentages is a fundamental skill that goes far beyond just calculating shopping expenditures. From sales tax and discounts to interest rates on savings accounts and loans, percentages are everywhere in personal finance. They help us compare values, understand growth or decline, and make informed decisions about our money. Whether you're tracking your budget, evaluating an investment, or simply trying to figure out the best deal on a new item, a good grasp of percentages puts you in control of your financial decisions and helps you manage your funds effectively.