Asked by juan

A pharmacist has 40% and 60% iodine solutions on hand. How many liters of each iodine solution will be required to produce 4 liters of a 50% iodine.
Answered by Steve
.4x + .6(5-x) = .5(4)
x=5

so, 5L of 40% and 5L of 60%

makes sense, since 50% is halfway between the two.
Answered by Anonymous
5, 6
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