The management at Highly Technical Services (HTS) wants to develop a model that
will help allocate technicians’ time between service calls to government contract
customers, private industry contract customers, and new customers. A maximum of 80
hours of technician time is available over the 2-week planning period. To satisfy
cash-flow requirements, at least $1000 in revenue (per technician) must be generated
during the 2-week period. Technician time for government customers generates $40 per
hour, while time for private industry customers generates $30 per hour, and technician
time for new customers only generates an average of $5 per hour because in many cases
a new customer contact does not provide billable services. To ensure that the new
customer contacts are being maintained, the number of new customer contacts must be
at least 45% of the government and private industry contract contacts. For the revenue
and policy requirements stated, HTS would like to determine how to allocate technician
time between regular customers and new customers in order to maximize the total
number of customers contacted during the 2-week period. Technicians require an
average of 45 minutes for each contract contact and 1 hour for each new customer
contact. Develop a linear programming model that will enable HTS to optimally
allocate technician time between regular customers and new customers.
Under OPT, lead times are _____________ rather than ________________.