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30 November, 13:46

Lindsey surveyed a random sample of students in 7th grade at her school to determine how students get to school each day. The results of the survey are shown below. 8 students walk or ride a bike 15 students ride in a car 25 students take the bus Based on the results of the survey, how many of the 720 students in 7th grade do NOT ride in a car to school?

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Answers (2)
  1. 30 November, 14:06
    0
    495 students in 7th grade do not ride a car to school

    Step-by-step explanation:

    Step 1: Find the percentage of number of students in 7th grade who ride in a car to school in the sample.

    Number of students walking or riding a bike = 8

    Number of students who ride a car = 15

    Number of students who take the bus = 25

    Total students in the sample = 48

    ⇒ Percentage of students who rides a car in the sample = 15/48 * 100 = 31.25%

    Step 2: Find the equivalent number of students who ride a car in the total number of students.

    Total number of students = 720

    Number of students who ride a car = 31.25/100 * 720

    = 225

    Step 3: Find the number of students who do not ride a car to school.

    Number of students who do not ride a car to school = 720 - 225 = 495
  2. 30 November, 14:44
    0
    459 dont ride a car
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