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$,$$$,915,000,$$$265,000,$$$400,000,$$$250,000$