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# Studies have shown that hotels use 195 gallons of water

Studies have shown that hotels use 195 gallons of water per average overnight guest. This is nearly twice the rate of water use compared to the use per person in a home setting. Many hotels are located in areas that are naturally water stressed. Reducing the amount of water used per overnight guest is important for both environmental and economic reasons.

For this assignment, you will calculate the costs associated with using conventional showerheads at the Xavier Hotel, and compare that to the costs of using low-flow showerheads instead.  answer the questions below

1.How many gallons of water are used in a 10-minute shower with a showerhead that uses 5.5 gallons per minute?

Follow these steps to work through this calculation:

• Minutes per shower × Gallons used per minute = Gallons per shower

2.How much does each hot-water shower cost? Assume that water costs \$6.50 per 1000 gallons—or \$0.0065 per gallon. Assume it costs \$0.03 to heat each gallon of water to average showering temperature.

Follow these steps to work through this calculation:

• Gallons per shower × Cost of water per gallon = Cost of water per shower
• Gallons per shower × Cost of heat per gallon = Cost of heat per shower
• Cost of water per shower + Cost of heat per shower = Cost per hot-water shower

3.The Xavier Hotel has 400 rooms and 67% occupancy, with an average of 1.4 guests per occupied room. What is the cost per day of all showers?

Follow these steps to work through this calculation:

• Number of guestrooms × Occupancy = Number of occupied guestrooms
• Number of occupied guestrooms × Average number of guests per occupied room = Number of guests per day
• Number of guests per day = Number of showers per day
• Number of showers per day × Cost per hot-water shower = Cost per day of all showers

4.How much does the Xavier Hotel spend per year on showers?

Follow these steps to work through this calculation:

• Cost per day of all showers × 365 days = Cost of showers for one year using conventional showerheads

5.Low-flow showerheads use less water than traditional showerhead. Do some research to determine how many gallons are used per minute by the low-flow showerhead of your choice. How much would the Xavier Hotel spend per year on showers if it switched to low-flow showerheads?

Follow these steps to work through this calculation:

• Minutes per shower × Gallons used per minute = Gallons per shower
• Gallons per shower × Cost of water per gallon = Cost of water per shower
• Gallons per shower × Cost of heat per gallon = Cost of heat per shower
• Cost of water per shower + Cost of heat per shower = Cost per hot-water shower
• Number of showers per day × Cost per hot-water shower = Cost per day of all showers
• Cost per day of all showers × 365 days = Cost of showers for one year using low-flow showerheads

6.How much money would the hotel save per year if it switched all of its guestrooms to low-flow showerheads?

Follow these steps to work through this calculation:

• Cost of showers for one year using conventional showerheads – Cost of showers for one year using low-flow showerheads = Money saved per year by using low-flow showerheads

7.Assume that disposing of a gallon of waste water costs \$2.06 per 1000 gallons or \$0.00206 per gallon. How much money does the Xavier Hotel spend on waste-water disposal per year for showers, using conventional showerheads?

Follow these steps to work through this calculation:

• Number of showers per day × Gallons per shower using conventional showerheads = Gallons per day for all showers
• Gallons per day for all showers × 365 days = Gallons used per year for all showers
• Gallons used per year for all showers × Cost of waste-water disposal per gallon = Cost of waste-water disposal for one year