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solution

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ?

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ?

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? 30

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? 20% of the 30 ounces is alcohol. 20% of 30 = (.20)(30) = 6 There are 6 ounces of alcohol and 24 ounces of water. 30

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? 6 30

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? Let x = the number of ounces of pure alcohol to be added. 6 30

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? x 6 30

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? # ounces of alcohol # ounces of solution x = .40 6 30

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? # ounces of alcohol=x+6 # ounces of solution x = .40 6 30

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? # ounces of alcohol=x+6 # ounces of solution=30+x x = .40 6 30

How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? # ounces of alcohol=x+6 # ounces of solution=30+x x = .40 6 30

x+6 30+x How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? x+6 30+x x = .40 6 30

x+6 30+x How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? x+6 30+x x = .40 6 x+6 = .40 ( 30+x ) x+6 = 12 + .4x .6x = 6 x = 10 30

10 x+6 30+x How many ounces of pure alcohol must be added to 30 ounces of a 20% alcohol solution to make a 40% alcohol solution ? 10 ounces x+6 30+x x 10 = .40 6 x+6 = .40 ( 30+x ) x+6 = 12 + .4x .6x = 6 x = 10 30