Should've put this in mathematics, you know? But don't worry, mistakes happen!
Though, in order to do this problem, we need to add 20 for the total gallon.
Let's use X for a placeholder to determine the amount, as the gallon of 25% alcohol and percentages can be in decimal forms. It'd be 0.25x gallons worth of alcohol afterwards. We then add 20-x gallons to 5% of alcohol, which is 0.05(20-x).
This would then allow us to find the sum of 20 gallons to 20% of alcohol, containing at least 0.2(20) gallons of the alcohol.
We'd then be able to develop this equation;
0.25x + 0.05(20-x) = 0.2(20).
And then so on the sequence continues...
0.25x + 1 - 0.05x = 4
0.2x = 3
x = 3/0.2
We'd then be able to come to a conclusion that;
1. X equals 15 gallons of 25% alcohol
2. 20-x equals 5 gallons of 5% alcohol.
I believe the answer is a cutaway drawing/cutaway diagram
<span>Each mineral has a defined chemical composition, and is different from oters in terms of this composition, and possess different elements. This gives different physical and chemical properties to the minerals, which are unique to each mineral.</span>
Urban area is by definition a city. Small town is a small TOWN.