A certain store sells only black shoes and brown shoes. In a certain week, the store sold x black shoes and y brown shoes. If 2/7 of all shoes sold that week were black, which of the following expressions represents the value of y, in terms of x?	Choose the correct option: A) x/3 B) 5x/2 C) 2x/3 D) 3x/2 E) 2x
x/(x+y) = 2/7   7x = 2x+2y   5x = 2y   y = 5x/2   Answer 5x/2
<result>B</result>
A certain store sells only black shoes and brown shoes. In a certain week, the store sold x black shoes and y brown shoes. If 2/7 of all shoes sold that week were black, which of the following expressions represents the value of y, in terms of x?