How much should the man pay?

W: Here’s the stand.
M: Ah, yes. Hmm, how much is this chair? W: It’s $20.
M: Could you give me a discount?
W: A discount? Well, it depends on the size of the order. If you buy 50 units, I’ll give you a 5% discounts if you buy 100 units or more, I’ll give you a 10% discount.
M: Sounds good. OK, I’ll take 100.

A: So, let’s talk about next week’s arrangements. When is the market conference?
B: It’s on Monday. And the sales conference is on Friday.
A: Friday? The seminar is on Friday according to my diary.
B: There’s been some change now. The seminar is on Thursday.