Practical Mathematics for Grade 11, Problem ID: 4732

Practical Mathematics K11A district sends, on average, a total of 200 million gallons of water each month to its 20,000 residential customers.
In the winter months, it sends an average of 100 million gallons per month.

Assuming the winter period lasts three months, what is the average number of gallons sent in each nonwinter month?

300 million gallons200 million gallons250 million gallons233 million gallons