Final answer:
The specific percentage of Americans unaware of their monthly spending as reported by Mint.com is not provided in the information given. Contextual financial facts include the average amount of U.S. currency per person being $3,500, and the importance of intuitively understanding personal budgeting, like calculating discretionary income without a formal formula.
Step-by-step explanation:
According to data from Mint.com, the answer to how many Americans reported that they didn't know how much money they'd spent in the previous month is not provided in the provided reference information. To maintain accuracy and professionalism, only factual data based on available information can be offered in response to the student's question. Without specific data from Mint.com or another credible source that states the percentage of Americans unaware of their monthly spending, it would be improper to guess among the options provided (A. about a third, B. about half, C. about two-thirds, D. about a quarter).
To help provide some context in understanding financial habits and currency usage, we can discuss related facts. The total amount of U.S. currency in circulation, when divided by the population, amounts to approximately $3,500 per person. This figure is significantly higher than what most individuals carry on their person regularly, indicating that a substantial portion of the currency is not in active circulation with everyday consumers. It may be held by banks, businesses, in savings, or stashed away for various reasons.
In addition, while considering personal finance, it is important to develop an intuitive sense of budgeting and expenses, like understanding the fraction of one's income allocated to various expenses. For instance, if a person earns $50,000 per year and has monthly expenses totaling $3,000 for rent and other bills, they can calculate they have a little over $1,000 for discretionary spending each month without using a specific formula, but rather by performing simple arithmetic.