Suppose that there are two types of tickets to a show: advance and same - day. The combined cost of one advance ticket and one same - day ticket is $ 60. For one performance, 20 advance tickets and 25 same - day tickets were sold. The total amount paid for the tickets was $ 1400. What was the price of each kind of ticket?

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit