A store manager purchases a DVD for $15. He marks it up to $21.75 in order to make a profit. What is the percent of increase?

Someone . me. compound probability

Adam plans to choose a video game from the section of the store where everything is 75% off. he writes the expression d-0.75d to find the sale price of the game if the original price is d dollars. gena correctly writes another expression, 0.25d, that will also find the sale price of the game if the original price is d dollars. use the drop down menus to explain each part of adams and rena's expression

Long division the problem is 40 ➗ 348 = ?