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George, after one hour, should have 2/3 section of a fence done. Since there is 30 minutes in 1/2 an hour, and he is doing 1/3 ever 30 minutes. You must add 1/3 and 1/3 to get an hours worth of work.
The fraction represents the section of fence George can build per hour is 2/3.
Fraction
A fraction can represent the ratio of the numerator and denominator.
Given information
George is building a fence.
He builds his fence at a constant rate of 1\3 section of fence every 1\2 hour.
The fraction represents the section of fence George can build per hour is;
[tex]= \dfrac{\dfrac{1}{3}}{\dfrac{1}{2}}\\\\= \dfrac{1}{3}\times \dfrac{2}{1}\\\\=\dfrac{2}{3}[/tex]
Hence, the fraction represents the section of fence George can build per hour is 2/3.
To know more about fractions click the link given below.
https://brainly.com/question/25957160