Question

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?

Answer 1

What is the initial water volume in the reservoir?

Explanation:

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