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How many liters of a 40 percent acid solution must be added to 100 liters of a 25 percent solution to obtain a 30 percent solution?
Wiki User
∙ 11y ago
Suppose L litres are required.
@ 40% it will contain 0.4L of the active ingredient.
Then total volume of mixture = L + 100 litres
and volume of active ingredient = 0.4L + 25 litres
The strength is (0.4L + 25)/(L + 100) = 30% = 0.3
(0.4L + 25) = 0.3*(L + 100)
0.4L + 25 = 0.3*L + 30
0.1L = 5
L = 50 litres.
Wiki User
∙ 11y ago
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