Coca-Cola Co. and PepsiCo are expected by analysts to post later in October another quarter of profit and revenue gains.

But investors will be watching to see how each company is handling a difficult North American market and whether a slowing U.S. economy is spreading globally.

Atlanta-based Coca-Cola and PepsiCo, based in Purchase, N.Y., will report third-quarter results within the next two weeks. Atlanta-based Coca-Cola Enterprises, Coca-Cola’s largest bottler, also is expected to report results this month. CCE, which makes and distributes most of Coke’s North American volume, has been hit with rising costs for aluminum, plastic and sweeteners and slowing sales at convenience stores.

PepsiCo

Expected report date: Oct. 14

Third-quarter expectations: Earnings per share of $1.08, up 9 percent from the third quarter of 2007, according to Thomson Financial.

First-half recap: Revenue rose 14 percent and net income was up 7 percent. North America beverage volume was down slightly while international sales increased. Pepsi’s food business, which includes Frito-Lay and Quaker, posted profit and revenue growth.

Coca-Cola Co.

Expected report date: Oct. 15

Third-quarter expectations: Earnings per share of 77 cents, up 8 percent, according to Thomson Financial.

First-half recap: Revenues and profits, excluding one-time charges, rose at double-digit rates. Case volume in Asia, Eastern Europe and Latin America increased at a steady clip. Sales in Western Europe and North America posted modest or no gains.

Coca-Cola Enterprises

Expected report date: Not yet announced

Third-quarter expectations: Earnings per share of 46 cents, up 5 percent, according to Thomson Financial.

First-half recap: Revenues were up 6 percent but profits were down as CCE took a $3.5 billion non-cash charge. The charge was for a write-down of the value of its North American franchise agreements with Coca-Cola. CCE said it would be raising prices to offset commodity cost increases.