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?

459 dont ride a car

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