Solve the following word problem. a man travels from town x to town y at an average rate of 50 mph and returns at an average rate of 40 mph. he takes a 1/2 hour longer than he would take if he made the round trip at an average of 45 mph. what is the distance from town x to town y?miles

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