<PRE><B>Question 1039676</B>
x + y = 93, where x is amount of 40% concentration and y is amount of 25% concentration
:
x = 93 - y
:
93 * 0.26 = 24.18 of HCI
:
0.40x + 0.25y = 24.18
:
now substitute 93 - y for x
:
0.40(93 - y) + 0.25y = 24.18
:
37.2 - 0.40y + 0.25y = 24.18
:
-0.15y = -13.02
:
y = 86.8
x = 6.2
:
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We need to mix
6.2 liters of the 40% HCI solution with
86.8 liters of the 25% HCI solution
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:
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