Scientific American presents Math Dude by Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. Long time math fans may remember our first foray into the world ...

The $130 fishing rod was first marked down 40 percent, and now it’s an additional 25 percent off. How much will it end up costing? If you’re not sure how to go about figuring this out, you’re not ...

Let's face it: Even the best budgets can't always predict your actual expenses. Things happen. Unexpected costs arise. That's life. That's why it's so useful to review your budget after a project is ...

Calculate annual % change by dividing start by end value, raising to inverse years, minus one, times 100. Ex: a drop from $15M to $10M over 2 years is a 18.4% average annual decline. This calculation ...

Application of formula here is highly important to learn how to calculate the percentage of marks. This formula does not require pen and paper as other formulas do. Percentage Calculation A percentage ...

The cost of investing has come down dramatically over time, as commissions have fallen so far that it's easy to buy and sell shares cheaply. Yet there are other trading costs beyond brokerage ...

Most companies sell their products on credit, for the convenience of the buyers and to increase their own sales volume. The term bad debt refers to outstanding debt that a company considers to be ...

Let's face it: Even the best budgets can't always predict your actual expenses. Things happen. Unexpected costs arise. That's life. That's why it's so useful to review your budget after a project is ...

Review budgets post-project to understand expense variances and improve forecasting. Calculate over-budget percentages by subtracting budgeted amounts from actual costs. Analyze specific items in your ...