Reuters Holdings agreed to acquire Rich Inc.

London-based Reuters said it will pay $57.5 million in cash and stock for the company, which designs communications systems for financial trading rooms. Reuters, a news and information company, said it is acquiring Rich to provide more complete service to its business clients. Rich, based in Franklin Park, Ill., near Chicago, has offices in 13 North American cities and employs about 350 people. Rich will operate as a wholly owned subsidiary of Reuters, a spokesman for Rich said.