I stock [product],
sell [rate], supplier
takes [lead time].
Reorder point and
buffer — and how it
changes if they're unreliable.

Work Out When to Reorder

Slow suppliers and unreliable ones need different buffers.

Prompt

I stock [product], sell about [rate], and my supplier takes [lead time] to deliver. Work out a reorder point and buffer, and explain how the answer changes if the supplier is unreliable rather than merely slow.