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1 - doubled = 2, which is one more than its half.
One fourth cup doubled is one half cup, since 1/4 + 1/4 = 2/4, or 1/2.
To double two-thirds of a cup, you would multiply 2/3 by 2. This can be calculated as (2/3) * 2 = 4/3 or 1 and 1/3 cups. Therefore, two-thirds cup doubled is equivalent to 1 and 1/3 cups.
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