The Globe and Mail reports in its Friday edition that Restaurant Brands International reported growth in sales and profits in its second quarter, fueled by strong United States performance at Burger King, despite a slowdown in Tim Hortons' Canadian sales. The Globe's Susan Krashinsky Robertson writes that Burger King is four years into a turnaround plan involving substantial investments to remodel restaurants, enhance the menu, and increase advertising to improve brand perception. Recently, it also revamped its Whopper. The chain's comparable sales jumped by 8.6 per cent in the quarter ended June 30, compared with the same period a year ago. Burger King was the only one of Restaurant Brands' chains to report significant sales growth in the quarter. Over all, the Toronto-based company reported comparable sales growth of 3.8 per cent, as sales were flat at Tim Hortons and Firehouse Subs, and declined by 5.1 per cent at Popeyes. The 0.1-per-cent comparable sales growth at Tim Hortons in Canada represented a significant slowdown compared with the same time last year, when sales grew by 3.6 per cent. Tim Hortons is a major contributor to the company's earnings, representing roughly 40 per cent of its operating profits.