1.4 A water supply reservoir has an annual capacity o with a present population of 60,000, which is expec How many years from now will the city's needs ex arithmetic growth of the population and an average gallons per person. Disregard the losses.

Sustainable Energy
2nd Edition
ISBN:9781337551663
Author:DUNLAP, Richard A.
Publisher:DUNLAP, Richard A.
Chapter11: Hydroelectric Energy
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1.4 A water supply reservoir has an annual capacity of 25 x 10³ acre-ft. It is serving a city
with a present population of 60,000, which is expected to increase to 100,000 in 20 years.
How many years from now will the city's needs exceed the reservoir's capacity? Assume
arithmetic growth of the population and an average daily draft from the reservoir of 160
gallons per person. Disregard the losses.
Transcribed Image Text:1.4 A water supply reservoir has an annual capacity of 25 x 10³ acre-ft. It is serving a city with a present population of 60,000, which is expected to increase to 100,000 in 20 years. How many years from now will the city's needs exceed the reservoir's capacity? Assume arithmetic growth of the population and an average daily draft from the reservoir of 160 gallons per person. Disregard the losses.
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