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12 September, 21:31

Mrs. Barlow's math class took a test yesterday. Out of 100 students, 70% of them passed. How many of Mrs. Barlow's students

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  1. 12 September, 21:38
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    X over 100 = 70 over 100

    cross multiply 70 by 100, then divide by 100 to get 70, then subtract 70 from 100 to get 30.

    so 30 students failed the test
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