Trash at sea? A report on the problem of vacation cruise ships polluting the sea by dumping garbage overboard said:

On a seven-day cruise, a medium-size ship (about 1,000 passengers) might accumulate 222,000 coffee cups, 72,000 soda cans, 40,000 beer cans and bottles, and 11,000 wine bottles.

Are these numbers plausible? Do some arithmetic to back up your conclusion.

Suppose, for example, that the crew is as large as the passenger list. How many cups of coffee must each person drink every day?

176 CHAPTER 9 Do the Numbers Make Sense?