Dave, I'm going to pick up food and drink for Saturday's picnic. Any suggestions?
Well, everyone has been talking about having a barbecue down by the river. So why don't you pick up some hamburger and hot dogs?
OK, but how much hamburger meat are we going to need? And hot dogs, too.
I don't know. How about 3 pounds of hamburger and a couple of packages of hot dogs?
Oh, that's not going to be enough. Do you remember the last picnic in the mountains? Jim, your roommate, ate about 10 hamburgers by himself.
Yeah, I remember that. Then 7 packages of hot dogs should be enough. And you'd better pick up some chicken for those who don't like hamburgers or hot dogs.
OK. How about 5 or 6 bags of potato chips.
Better make that 8.
OK. Uh, we still need some soft drinks. How about 10 of those 2 liter bottles?
Sounds fine. But be sure to buy a variety of drinks.
OK. And what about dessert?
Well, maybe we could ask Kathy to make a few cherry pies like she did last time.