Answer:
He should reorder when he is left with 200 hammers.
Step-by-step explanation:
Reorder point is the trigger which informs the businessmen to order the inventory when the stock is used.
Reorder point = Safety Stock + (Average daily usage of units * Average lead time in days )
Reorder Point = 0 + (100 hammers * 2 days)
Reorder Point = 200