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$[[,$Dirt Bikes,$\backslash$table$[[$Mountain$],[$Bikes$]],$Racing Bikes,Total$],[$Sales$,$$$90,000,$$$150,000,$$$70,000,$$$310,000$