# Basic Math Formulas

Math formulas are used in everyday life, like when we need a distance formula to determine how much time will it take for a car trip. The simple interest formula to determine the compound interest for a 2 year. Even shopkeepers uses a formula to check the total amount of purchased product. Therefore, it's very important to learn the math formulas.

**Below are some of the commonly used math formulas:**

Average Formula = $\frac{a_{1}+a_{2}+.....+a_{n}}{n}$

Proportion Formula = $\frac{a}{b}$ = $\frac{c}{d}$

Interest = principal $\times$ rate of interest $\times$ time

Volume of a box = length $\times$ width $\times$ height