Water consumption. A recent report, Saving Water in Your Home, published by the City Government of Portland established the daily water usage of an average household. Assume their data suggests that in a day a household uses about 25 gallons of water for flushing the toilet, 20 gallons for showering, 50 gallons through faucets, and 35 gallons for running the washing machine. The results are shown in the following Excel pie chart.

a. According to the pie chart, what is the proportion of water that is used per day for showering? Verify the accuracy of this proportion using the information provided in the question text.

b. If the City Government of Portland is no longer interested in analyzing the water used for the washing machine, the new pie chart should only have three slices. Reconstruct the pie chart to reflect this and interpret the results.