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16 July, 12:48

Eight less than two-fifths of the seventh grade students had a perfect attendance in the first quarter. If 142 students had perfect attendance, how many seventh grade students are there?

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  1. 16 July, 13:01
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    Answer: the number if seventh grade students is 375

    Step-by-step explanation:

    Let x represent the number of seventh grade students are there.

    Eight less than two-fifths of the seventh grade students had a perfect attendance in the first quarter. This means that the number of students that had a perfect attendance in the first quarter is

    2x/5 - 8

    If 142 students had perfect attendance, it means that

    2x/5 - 8 = 142

    2x/5 = 142 + 8 = 150

    2x = 150 * 5 = 750

    x = 750/2

    x = 375
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