OpenStax, Elementary Algebra 2e §5.6 Graphing Systems of Linear Inequalities · Review Exercise 104 · Algebra · Systems
Graphing Systems of Linear Inequalities · Review Exercise 104
Translate to a system of equations and solve.
A scientist needs 70 liters of a 40% solution of alcohol. He has a 30% and a 60% solution available. How many liters of the 30% and how many liters of the 60% solutions should he mix to make the 40% solution?
This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.
OpenStax, Elementary Algebra 2e · §5.6 Graphing Systems of Linear Inequalities · Review Exercise 104
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