In Exercises 67 through 72, write a program to solve the problem and display the answer in a list box. The program should use variables for each of the quantities.
Water Usage A survey showed that Americans use an average of 1600 gallons of water per person per day, including industrial use. How many gallons of water are used each year in the United States? Note: The current population of the United States is about 315 million people. See Fig. 3.5.
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