A scientist needs to make 5.4 liters of saline solution (salt water), in which the salt level must be at 28% concentration

Question

A scientist needs to make 5.4 liters of saline solution (salt water), in which the salt level must be at 28% concentration (meaning 28% of the water is salt). Unfortunately, the scientist only has two types of saline solution in his possession. He has saline solution with a 12% concentration level and saline solution with a 30% concentration level. How much of each type of saline solution should the scientist mix together to achieve 5.4 liters of saline solution at a concentration level of 28%? Let x represent the amount 12% saline solution and let y represent the amount of 30% saline solution. 
Determine how many liters of each should be mixed to
get the desired solution.
*Enter a numerical value only.
The amount of 12% saline solution needed is
liters and the amount of 30% saline solution needed is

Kunduz · Accepted Answer

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