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To arrive at 2000 liters of 60% saline solution the attendant has to mix a 90% and a 40% saline solution. How many liters of each should be used?

 Feb 27, 2020

Best Answer 

 #1
avatar+22017 
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Sum of ingredients   = sum of products

 

90% solution = x                ingredient   is  .9 x

40% solution = 2000 - x     ingredient = .4 (2000-x)

 

ingredients summed = .6 (2000)

 

.9x        +    .4(2000-x)        = .6 (2000)           solve for x = 90% solution liters to use     then 40% is 2000-x liters

 Feb 27, 2020
 #1
avatar+22017 
+2
Best Answer

Sum of ingredients   = sum of products

 

90% solution = x                ingredient   is  .9 x

40% solution = 2000 - x     ingredient = .4 (2000-x)

 

ingredients summed = .6 (2000)

 

.9x        +    .4(2000-x)        = .6 (2000)           solve for x = 90% solution liters to use     then 40% is 2000-x liters

ElectricPavlov Feb 27, 2020

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