A company that specializes in language tutoring lists the following information concerning its English-speaking employees: 21 speak German, 27 speak French, 31 speak Spanish, 45 speak Spanish or French, 38 speak French or German, 44 speak German or Spanish, 8 speak Spanish, French, and German, and 7 office workers and secretaries speak English only.
(a) What percent of the employees speak at least one language other than English?