Last option is the correct answer.
Step-by-step explanation:
Given that
Let x stand for the solution a and y stand for the solution B
So,
According to statement that
30 gallons have to be made
[tex]x+y=30[/tex]
Solution A contains 29 percent bromine => 0.29x
Solution B contains 53 percent =>0.53y
And the mixture of 30 gallons contains 45% bromine
[tex]0.29x+0.53y=30*0.45\\0.29x+0.53y=13.5[/tex]
Following equations will be used for solving the problem
[tex]x+y = 30\\0.29x+0.53y=13.5[/tex]
Hence,
Last option is the correct answer.
Keywords: Equations, Variables
Learn more about linear equations at:
- brainly.com/question/10941043
- brainly.com/question/10978510
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