SOLUTION: A experiment calls for 40 gallons of a 70% saline solution. You only have a 80% saline solution and a 40% saline solution. Let x represent the amount of 80% saline solution and y r
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Question 1133840: A experiment calls for 40 gallons of a 70% saline solution. You only have a 80% saline solution and a 40% saline solution. Let x represent the amount of 80% saline solution and y represent the amount of 40% saline solution, what is the equation that describes the total amount of pure saline in the solution? Answer by addingup(3677) (Show Source):
You can put this solution on YOUR website! 0.8x + 0.4(40-x) = 0.7(40)
0.8x + 16 - 0.4x = 28
0.4x = 12
x = 30 You need 30 gallons of the 80% solution and 40-30 = 10 gallons of the 40% solution
