Question 30 - 32 refer to following paragraph:

M: I need 100 black pens and 200 blue ones.
W: What do you need so many pens for? Are you planning to write a book?
M: Very funny. I need them to pass out at the electronics conference we’re hosting next week.
W: Oh, yes. I’ve seen the signs advertising that conference. I hear it usually draws a large crowd.
M: Yes, it’s a popular event
W: Let’s see… at 40 cents each, the total for your pens comes out to $120. Will that be cash or charge?

30. How many pens does the man need?