The Regal Cycle Company manufactures three types of bicycles $-$ a dirt bike, a mountain bike, and a racing bike, Data on sales and expenses for the past quarter follow:

$\backslash$table$[[,$Total,Dirt Bikes,$\backslash$table$[[$Mountain$],[$Bikes$]],$Racing Bikes$],[$Sales$,$$$300,000,$$$90,000,$$$150,000,$$$60,000$