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How many liters each of a 35% acid solution and a 85% acid solution must be used to produce 90 liters of a 60% acid solution? (Round to two decimal places if necessary.)

 Sep 6, 2020
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Let the number of Liters of 35% solution needed =T

The number of Liters of 85% solution needed       =90 - T

 

0.35T  +  0.85[90 - T] =0.60 * 90, solve for T

 

T = 45 Liters of 35% acid solution will be needed

90  -  45 = 45 Liters of 85% acid solution will be needed.

 Sep 6, 2020

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