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Unformatted text preview: He invested part at 2% simple interest and the rest at 3%. He earned a total of $1600 in annual interest. How much was invested at each rate? 50) How many liters of a 14% alcohol solution must be mixed with 20L of a 50% solution to get a 30% solution? 56) LeeAnn wants to mix tea worth 2cents per oz with 100oz of tea worth 5 cents per oz to make a mixture worth 3 cents per oz. How much 2 cent tea should be used? 54) How much water must be added to 6 gal of a 4% insecticide solution to reduce the concentration to 3%?...
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