At halftime, Boarwarts Academy had scored all of the points so far in their annual match against Range Hill School. In the second half, each side scored three points. At the end of the match, Boardwarts Academy had scored 90% of the points.
What fraction of the points in the match was scored in the second half? Give your fraction in its simplest form.
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Junior Mathematical Challenge 2007 (2007)
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