The fact that one should not add or subtract money unless it occurs at the same point in time is an illustration of what concept? a. time value of moneyb. marginal returnc. economy of scaled. pareto principle

The correct answer is letter "A": Time value of money.

Explanation:

The time value of money is a concept that states that a dollar today is always worth more than a dollar tomorrow. This concept is the main position of investors since having the money as of today represents that money could earn more interest if saved over some time. The more money than can be saved all at once the better. If added or subtracted at different times, the total interest earned could be lower.

both are integral parts of a corporate balance sheet. the cash flow statement, or statement of cash flows, measures the sources of a company's cash and its uses of cash over a specific time period. the income statement measures a company's financial performance, such as revenues, expenses, profits or losses over a specific time period (in fact, it's sometimes called a statement of financial performance).

a cash flow statement shows exactly how much money a company has received and how much it has spent, traditionally over a period of one month. it captures the current operating results and changes on the balance sheet, such as increases or decreases in accounts receivable or accounts payable, and does not include noncash accounting items such as depreciation and amortization. the cash flow generally comes from revenue received as a result of business activity, but it may be augmented by funds available as a result of credit. a cash flow statement is used to determine the short-term viability and liquidity of a company, specifically how well it is positioned to pay its bills and vendors.