International Film Exchange Ltd., which distributes American...

International Film Exchange Ltd., which distributes American movies to the Soviet bloc and imports Soviet and Eastern European films for U.S. distribution, was acquired by Home Entertainment Inc. from Heritage Entertainment Inc. . . . Hoyts Corp., an Australian movie-theater company, said it acquired Boston-based Interstate Theaters Corp.--the 20th-largest U.S. chain with 158 screens in New England, Maryland and Georgia--for an undisclosed price . . . . Ford Motor Co. increased the sticker price of the Ford Festiva by 1.6% and the Mercury Tracer by 1.3% . . . The Federal Reserve reported that the average yield for one-year T-bills, the most popular index for making changes in adjustable rate home mortgages, fell to 6.92% last week after averaging 7.01% the week before . . . Baker Hughes Inc. of Houston reported that the number of working oil and gas rigs in the United States dropped by 12 this week to total 904. A year ago, the count was 750.