Here's a look at what causes hair to turn gray and some of the factors that affect graying. Answer: The age at which you'll get your first gray hair (assuming your hair doesn't simply fall out) is largely determined by genetics.
Profits or net income generally imply total revenue minus total expenses in a given period. In accounting, revenue is often referred to as the top line due to its position on the income statement at the very top. This is to be contrasted with the bottom line which denotes net income.
This profit equals revenue minus expenses, excluding interest and income taxes. Assume you have $500,000 in revenue and $350,000 in expenses excluding interest and taxes. Your operating profit is $150,000. Your return-on-sales ratio is 30 percent, or $150,000 divided by $500,000, times 100.