US fastfood chain McDonald's has announced that total systemwide sales increased 11% to US$3.9bn for the month of June, while sales for the second quarter to 30 June increased 10% to $11.5bn. In constant currencies, McDonald's said the increases were 5% and 4%, respectively. Brand McDonald's comparable unit sales increased 2.1% for the month and 1.2% for the quarter, in constant currencies, compared with declines of 2.2% and 2.5% a year earlier.