Question 943615
I will do the first, you do the other three using the same method:
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1) 25% acid, 80% acid
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x = mL of first solution
y = mL of second solution
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x + y = 250
0.25x + 0.80y = 0.40*250
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put the system of linear equations into standard form
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x + y = 250
0.25x + 0.80y = 100
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copy and paste the above standard form linear equations in to this solver:
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answer:
x = 181.81818
y = 68.181818
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x = 182
y = 68
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