A medium-sized business operates a small fleet of vehicles. The existing practice is to allocate to each driver a particular area. This area then becomes their ‘patch'. The drivers undertake all the deliveries in their area and only help out in other areas in exceptional circumstances. However, demand has becomes less predictable and some drivers complain that they have an unfair workload. The business would like to see a more flexible use of vehicles and drivers. What aspects of this problem would you regard as quantitative and what aspects would you regard as qualitative?