P24. There are 21 working days in January and 20 working days in February. The monthly demands for NRG-A are 1,000 cases (January) and 1,200 cases (February). The monthly demands for NRG-B are 800 cases (January) and 1,000 cases (February). Working Days in Week Week 1 Week 2 1/3 1/6 1/9 - 1/13 4 5 Week 3 Week 4 Week 5 1/16 - 1/20 1/23 - 1/27 1/30 - 1/31 2/1 - 2/3 5 5 2 3 Working Days in Month 21 21 21 21 21 20 What is Week 5's demand for NRG-B?