72. The Speedy Delivery Service is considering the expansion of its business into afternoon
retail delivery service. This would require an additional $25,000 in labor costs per month.
Company-owned vehicles now used to make morning deliveries to local manufacturers could be
used in the afternoons to make retail deliveries. However, it is estimated that an additional
$10,000 would be required per month for gas, oil, and maintenance. It is further estimated that the
retail delivery use of the trucks would be allocated 45% of the existing $13,000 fixed vehicle costs.
What is the differential delivery cost per month for expanding into the retail delivery market?