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% discount; if you buy 100 units or more, I’ll give you a 10% discount.
M: Sounds good. OK, I’ll take 100.

A: Sales department. Andrew speaking.
B: Hello, Andrew. This is Bob Wang.
A: Oh, hello. Mr. Wang. What can I do for you?
B: Er. It’s about the meeting on the 29th of April. I’m afraid I can’t make it because I’ve got to go to a conference. Can we make it on the 19th of April?
A: Ah—no, no, I’m on a business trip. How about the 9th of May-er, about 10=00?
B: Let me check my diary. Ah, yes, that’s right.
A: Good, I’ll see you then.