an agency is having problems with personal phone calss made during working hours. each minute of a personal call costs the agency $0.50 in wasted...

an agency is having problems with personal phone calss made during working hours. each minute of a personal call costs the agency $0.50 in wasted wages. The agency decides to hire operators to monitor calls in order to attain the optimal number of personal calls (minimize total costs of personal calls; thus, this is a total cost/total benefit/net benefit minimization analysis problem).