The City Has A Revoir Of water for public use that currently has 125,000,000 gallons of water every week. How much water it will be left in the reservoir after a year?

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Answer 1 · 2018-07-25T10:16:42

What is the initial water volume in the reservoir?

Let me accept the current volume of the reservoir is $10,000,000,000$ gallons (or $2,641,729$ cubic meters).

If there is no evaporation from the reservoir and there is no loss (e.g. infiltration into the ground), the final water will be:

$10,000,000,000 - (52times125,000,000)$ gallons

Note that there are 52 weeks in a year

$=3,500,000,000$ gallons water will be available after a year.

If you say the initial water volume stored in this reservoir is V, the final volume after a year will be

$V - (52times125,000,000) = V - 6,500,000,000$ gallons