Business costs, revenue and profit

• Revenue 


  The amount of money a business earnt over a set period of time, typically one month or one year
• Variable costs 


  Expenses that change as the output changes

  petrol, cleaning supplies, employee
• Revenue

  Price x quantity
• Profit 


  The difference between the amount earned by a busines, and the amount earned by a busines, and the amount spent in a time period
• Profit

  TR - TC