evazquez
08.04.2020 •
Mathematics
A vat with 900 gallons of beer contains 4% alcohol (by volume). Beer with 6% alcohol is pumped into the vat at a rate of 9 gal/min and the mixture is pumped out at the same rate. What is the percentage of alcohol after an hour
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Ответ:
Step-by-step explanation:
Let the length of the rectangle be
and the width of the rectangle be 
:
The perimeter of a rectangle is given as
. Plugging in our given values, we have 
.
The area of a rectangle is given as
. Plugging in our given values, we have 
.