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24 May, 19:40

There are 250 students in a senior. of the 250 students, 102 are boys. there are 20 senior girls and 18 senior boys on the track team. What is the probablity a randomly chosen student from the senior class is a girl who does not run track?

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  1. 24 May, 20:04
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    If 102 are boys then 250 - 102 = 148 are girls.

    If 20 girls run track, then 148 - 20 = 128 girls do not run track

    probability a randomly chosen student from the senior class is a girl who does not run track = (probability the student chosen is a girl) * (probability the student does not run track)

    = (148/250) * (128/250) = 128/250 = 62/125
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