Eight less than two-fifths of the seventh grade students had a perfect attendance in the first quarter. If 142 students had perfect attendan

Question

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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Ella 3 weeks 2022-01-03T04:46:11+00:00 1 Answer 0 views 0

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    2022-01-03T04:47:34+00:00

    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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45:7+7-4:2-5:5*4+35:2 =? ( )