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Janet is mixing a 15% glucose solution with a 35% glucose solution. This mixture produces 35 liters of a 19% glucose solution. How many liters of the 15% solution is Januet using in the mixture?
mixing a 15% glucose solution with a 35% glucose soution Let x represent the 35% solution (assigning x to more concentrated solution) then (35-x) will be the amount of the 15% soluton .35x + .15(35L-x) = .19*35L solving for x .35x + .15*35L [ -.15x = .19*35L .20x = .04*35L x = .15*35L/.20 = 7L, the amount of the 35% solution checking our answer 28L of the 15% solution (35L - 7L) .35*7 + .15*28 = 6.65 = .19*35 ]
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Expert answered|selymi|Points 11641|
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Asked 10/25/2013 8:00:34 AM
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A radiator contains 10 quarts of fluid, 30% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 40% antifreeze?
Weegy: Equation: active - active + active = active 0.30*10 - 0.30x + 1.00x = 0.40*10 - - - - 30*10 - 30x + 100x = 40*10 70x = 10*10 x = 10/7 = 1.4286 quarts (amt. [ to remove and replace) ] (More)
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Asked 10/25/2013 7:57:38 AM
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