Answer:1. 50 people2. 130 booksStep-by-step explanation:1. 200 - ((80 - 50) + (120 - 50) + 50) = 50 people2. (100-30) + (60-30) + 30 = 130 books
Answer:50 people like neither ice cream nor cake.130 books are either math or physics books.Step-by-step explanation: