The water used will be greater than 1600000 thousands of gallons for the fixed amount to be less expensive.
The users can either pay 77 cents per thousand gallons, or pay a fixed amount of $1,232,000 for unlimited water usage for one year.
Therefore,
77 cents = 0.77 dollars
Hence,
The user can pay 0.77 per thousand gallons.
He can pay a fixed amount of $1,232,000 .
Therefore, the amount of water the company will use for the fixed amount to be less expensive is as follows;
let
x = amount of water use in thousand gallons
Using inequalities,
0.77x ≥ 1,232,000
x ≥ 1,232,000 / 0.77
x ≥ 1600000
Therefore, the water used will be greater than 1600000 thousands of gallons for the fixed amount to be less expensive.
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