Business and consumer mathematics / Walter H. Lange, Temoleon G. Rousos, Robert D. Mason. Lange, Walter Henry. Rousos, Temoleon G. Lange, Walter Henry. Mathematics for business and consumers. Business mathematics Problems, exercises, etc. HF5694 .L36 1992 511.8 20 MAB Rev. ed. of: Mathematics for business and consumers. 4th ed. 1988. Includes index. Homewood, IL : Irwin, c1978. c1978. 1978 Text xll, 142 p. : eng