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15) Last year at Townsburg High School, 42% of the graduating seniors took the ACT exam,...

15) Last year at Townsburg High School, 42% of the graduating seniors took the ACT exam, 38% of the graduating seniors took the SAT exam, and 23% of graduating seniors too both exams.

A student is selected at random. If the student took the ACT, what is the probability that they also took the SAT?

Round your answer to four decimal places.

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