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algebra

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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.
1. iodine1 = 2, iodine2=2
2. iodine1 = 21, iodine2 = 21
3. iodine1 = 41, iodine2 = 41
4. iodine1 = 41, iodine2 = 21

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