So I'm going to make student tickets be s, and non-students n. So the equation would be s+2n=450. Hope this helped. :3
<h3>5 gallons of 50 % alcohol solution is used</h3>
<em><u>Solution:</u></em>
Let "x" is the gallons of 50 % alcohol solution
Then, 10 gallons is 35 % solution
The, 10 + x is the gallons of 40 % solution
Then, according to question,
"x" gallons of 50 % solution is mixed with 10 gallons of 35 % solution to get 10 + x gallons of 40 % solution
Therefore,

Thus 5 gallons of 50 % alcohol solution is used
The correct answer is D because students shouldn’t play or be near when cars have to pull in or ride by
The rule of Identity. X*1=X.
Divide both sides by x, and you get
X/X = 1