Raner, Harris and Chan is a consulting firm specializing in information systems for medical and dental clinics. The firm has two offices$-$one in Chicago and one in Minneapolis. It classifies the direct costs of consulting jobs as variable costs. A contribution format segmented income statement for the company's most recent year is given below:

Required:

$1-$a$.$ Compute the companywide break$-$even point in dollar sales.

$1-$b$.$ Compute the break$-$even point for the Chicago office and for the Minneapolis office.

$1-$c$.$ Is the companywide break$-$even point greater than, less than, or equal to the sum of the Chicago and Minneapolis break$-$even points?