Jeans giant Levi Strauss & Co on Monday reported a nine per cent year-on-year fall in third quarter net profit amid slow sales growth but said it expects sales to pick up during the fourth quarter. The San Francisco-based company said in a news release net income for the 13 weeks to August 25 fell to $13.7 million from $15m in the year-ago period, with sales up 3.5 per cent at $1.02 billion from $984m in 2001.