Mercer has three product lines in its retail stores: flipflops, sandals, and slippers. Results of the fourth quarter are presented below:

$\backslash$table$[[,$Flipflops,Sandals,Slippers,Total$],[$Units sold,$1,000,2,000,2,000,5,000],[$Revenue$,$$$20,000,$$$40,000,$$$25,000,$$$85,000$