McDonald\'s third quarter profits have risen 9%, the ninth increase in a row, as introducing cheaper food items helped to boost sales. The US fast food giant made a net profit of $1.5bn (£942m) in the three months to 30 September, up from $1.4bn a year earlier. Its revenues for the quarter rose 13.8% to $7.2bn, while sales at stores open for more than a year added 5%. McDonald\'s is also continuing to enjoy higher coffee and smoothie sales. These lines are important to the company, as they provide higher profit margins than its traditional food items. Its same-store sales, which pull out the impact of new openings, rose by 4.4% in the US, 4.9% in Europe, and 3.4% across Asia, the Middle East and Africa. McDonald\'s said sales were also lifted by its continuing store refurbishment programme. Its latest quarterly results beat market expectations.