Answer questions 1, 2, 3 and 4 and split them. Show all work

1.) Ten percent of what number is 75? 2.) Vacuum Cleaner Markup: If the Kirby Vacuum dealership pays $320 for each vacuum cleaner and sells it for $599, what is the percent markup? 3.) Weight Loss: On January 1, Max Saindoux weighed 235 pounds and decided to diet and exercise. On June 30, Max weighed 210 pounds. Determine the percent decrease in Max's weight from January 1 to June 30. 4.) Determine the simple interest. P25270332 r:10.95% t:161days