The nurse needs to mix 2% solution with 10% solution to get 10 ml of the prescribed 6% solution. What amount of each solution does she need to use?

Respuesta :

Volumes of 2% Solution = 5 ml

Volumes of 10% Solution = 5 ml

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Further explanation

Simultaneous Linear Equations could be solved by using several methods such as :

  • Elimination Method
  • Substitution Method
  • Graph Method

If we have two linear equations with 2 variables x and y , then we need to find the value of x and y that satisfying the two equations simultaneously.

Let us tackle the problem!

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Let:

Volumes of 2% Solution = x

Volumes of 10% Solution = y

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Total Volume = 10 ml

[tex]\boxed{x + y = 10}[/tex] → Equation 1

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The nurse needs to mix 2% solution with 10% solution to get 10 ml of the prescribed 6% solution.

[tex]2 \% x + 10 \% y = 6 \% (10)[/tex]

[tex]2x + 10y = 6(10)[/tex]

[tex]\boxed{x + 5y = 30}[/tex] → Equation 2

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Equation 1 - Equation 2:

[tex]( x + y ) - ( x + 5y ) = 10 - 30[/tex]

[tex]-4y = -20[/tex]

[tex]y = -20 \div -4[/tex]

[tex]y = 5 \texttt{ ml}[/tex]

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[tex]x + y = 10[/tex]

[tex]x + 5 = 10[/tex]

[tex]x = 5 \texttt{ ml}[/tex]

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Conclusion:

Volumes of 2% Solution = 5 ml

Volumes of 10% Solution = 5 ml

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Learn more

  • Perimeter of Rectangle : https://brainly.com/question/12826246
  • Elimination Method : https://brainly.com/question/11233927
  • Sum of The Ages : https://brainly.com/question/11240586

Answer details

Grade: High School

Subject: Mathematics

Chapter: Simultaneous Linear Equations

Keywords: Simultaneous , Elimination , Substitution , Method , Linear , Equations

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