SOLUTION: A truck radiator holds 135 liters of fluid. How much pure antifreeze must be added to a mixture that is 10​% antifreeze in order to fill the radiator with a mixture that is 2

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A truck radiator holds 135 liters of fluid. How much pure antifreeze must be added to a mixture that is 10​% antifreeze in order to fill the radiator with a mixture that is 2      Log On


   

Question 1062016: A truck radiator holds 135 liters of fluid. How much pure antifreeze must be added to a mixture that is 10​% antifreeze in order to fill the radiator with a mixture that is 20​% ​antifreeze?
Answer by ikleyn(52781) About Me  (Show Source):
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A truck radiator holds 135 liters of fluid. How much pure antifreeze must be added to a mixture that is 10% antifreeze in order to
fill the radiator with a mixture that is 20% & antifreeze?
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Let A be the required amount of the pure antifreeze, in liters.

Then the volume of the 10% antifreeze mixture to mix with the pure antifreeze is (135-A) liters.

The antifreeze balance equation is

A+%2B+0.1%28135-A%29 = 0.2*135.

Solve for A.

There is entire bunch of lessons covering various types of mixture problems
    - Mixture problems
    - More Mixture problems
    - Solving typical word problems on mixtures for solutions
    - Word problems on mixtures for antifreeze solutions
    - Word problems on mixtures for alloys
    - Typical word problems on mixtures from the archive
in this site.

Read them and become an expert in solution the mixture word problems.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this textbook in the section "Word problems" under the topic "Mixture problems".