From the following records regarding material calculate
1. the re-order level
2. the maximim stock level
3. minimum stock level
Re-order quantity : 6000 units
Minimum stock ( for emergency) : 5 weeks
average delivery time: 4 weeks
maximm stok level: 20 weeks
average Comsumption per weeks : 400 units
Minimum comsumption in 4 weeks : 1200 units.