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OpenStudy (anonymous):
in a high school with 500 students all students take part in atleast one of the three activities sports , music and craft. 125 students take part in sports only , 150 in music only , while 75 take part in both spots and music 30 learn music and crafts but not participate in sports and 20 take part in sports and craft but not in music find the % of student that paticipate in all of them?
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OpenStudy (unklerhaukus):
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