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A science teacher wants to obtain 6.25 quarts of a 35% acid solution by mixing a 25% acid solution what is 75% acid solution how much of each type of solution should be in the mixture

 Jul 27, 2022
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This can be reduced into the following system, where s is the amount of strong solution and w is the amount of weak solution:

 

s + w = 6.25

25%w + 75%s = 35% x 6.25 = 2.1875

 

Multiply the bottom by four to get rid of the percentages:

 

w + 3s = 8.75

 

Subtract the first equation from the second:

 

2s = 2.50

s = 1.25

w = 5.00

 Jul 27, 2022

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