28 Sep How much water is saved in a one-year period when using an efficiency washer vs regular
Order Instructions
WATER/TIME COMPARISONS
This project is incredibly unique. There is no right, or wrong answer and you will not be graded on the
correctness of your answer. However, you will be graded on identifying the assumptions that you will
need to make, the calculations once the assumptions are made, the correct conversions where needed,
and presentation of the logic of how you arrived at your answer.
PROBLEM NUMBER 1During a one-year time period, how many gallons of water would the average household save by using
an efficiency washer vs a regular washer? Is this one-year savings more or less than the amount
of water an average person drinks in a lifetime? Explain and show your assumptions, calculations, and
conversions.
Consider it to be 2 separate problems:
1. How much water is saved in a one-year period when using an efficiency washer vs regular
washer – answer based on your assumptions and calculations for full credit
2. How much water does an average person drink in a lifetime – arrive at this answer based on
your assumptions and calculations
3. Compare the answers to those 2 questions to arrive at your conclusion
Below are 2 pieces of information that you might find helpful
there are 128 oz in a gallon
there are 365 days in a year and also 52 weeks in a year
PROBLEM NUMBER 2Which amount of time is greater for the average person? The total time spent on his/her cell phone in a
year’s time, or the total time spent waiting in line when shopping in a lifetime?
Consider it to be 2 separate problems just as in problem 1 and arrive at your conclusion.
You need to make assumptions, conversions, and math calculations to arrive at your answer. You will not
be graded on the accuracy of your assumptions. You will be graded on the process at arriving at your
answers, the correct conversions once you make your assumptions, and your logic/thought process in
arriving at both answers. If you choose to research data for this project, that is fine but there is no need to
site your references.
