Thomas made two cups of lemonade, and neither tastes right. In one cup, he has 20% lemon juice, and in the other, he has 60% lemon juice. The cup with 60% lemon juice is too sour, and the cup with 20% is not sour enough. He wants to make the perfect lemonade for his big 20 oz. cup: one with 50% juice. How many ounces of each of the other cups does he have to add to the new 20 oz. cup to make lemonade with 50% juice?

Question

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16 oz. of the cup with 20% juice, and 4 oz. from the cup with 60% juice.
7 oz. of the cup with 20% juice, and 13 oz. from the cup with 60% juice.
19 oz. of the cup with 20% juice, and 1 oz. from the cup with 60% juice.
5 oz. of the cup with 20% juice, and 15 oz. from the cup with 60% juice

Answer 1

Only 7 oz. of the cup with 20% juice, and 13 oz. from the cup with 60% juice need to be added to the new 20 oz. cup to make lemonade with 50% juice.