$[$The following information applies to the questions displayed below.$]$

Condensed monthly income data for Thurber Book Stores are presented in the following table for November $20$x$1.($Ignore income taxes.$)$

$\backslash$table$[[,$M$$ll Store,Downtown Store,Total$],[$Sales$,$$$\mathrm{.}243,000,$$$366,000,$$$609,000$