Final answer:
The number of days that can be covered with the safety stock is the same in all scenarios, which is 35 days.
Step-by-step explanation:
To determine how many days can be covered with the safety stock, we need to divide the safety stock by the average weekly demand.
a) If the shipment is delayed by 42 days, the number of days that can be covered is 70 units / (14 units/week) = 5 weeks = 35 days.
b) If the shipment is delayed by 5 days, the number of days that can be covered is 70 units / (14 units/week) = 5 weeks = 35 days.
c) If the shipment is delayed by 35 days, the number of days that can be covered is 70 units / (14 units/week) = 5 weeks = 35 days.
d) If the shipment is delayed by 70 days, the number of days that can be covered is 70 units / (14 units/week) = 5 weeks = 35 days.