The office vacancy rate in downtown Los...

The office vacancy rate in downtown Los Angeles fell 1.4% during the second quarter of 1989 to 15.1%, according to Cushman & Wakefield of California . . . HQ Office Supplies Warehouses, a chain of eight discount office supply outlets, agreed to buy four Workplace Inc. stores in Southern California for about $8 million and signed leases for five more stores in the area. . . . Tyson Foods completed its acquisition of Holly Farms ... Assets of the nation’s 463 money market mutual funds rose $1.24 billion to a record $338.35 billion in the latest week, the Investment Company Institute said.