SOLUTION: Shelby has two types of iodine in her lab. She has brand 238 iodine, which costs 53 cents per ounce. She also has brand 691 iodine which costs $2.35 an ounce. How many ounces of

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Question 182236: Shelby has two types of iodine in her lab. She has brand 238 iodine, which costs 53 cents per ounce. She also has brand 691 iodine which costs $2.35 an ounce. How many ounces of brand 238 should she use if she has 55 ounces of brand 691 and wants to make a mixture that costs approximately $0.77 per ounce.
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
Let = amount of 238 iodine needed
Let = amount of 691 iodine needed
given:
oz





oz
She needs 362.1 oz of the 238 iodine
check:




OK

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