Math Unit 9, Lesson 2 Statistics Basics

Question

Question 6
At Northwest Middle School, 70% of the students get to school by bus.
At Northwest Middle School, 20% of the students get to school by car.
At Northwest Middle School, 10% of the students get to school by walking.
Based on this information, in Mrs. Harmon's class of 30 students _____ students ride the bus, ______ students come to school in a car, and _____ students walk to school.

Answer 1

To find out how many students ride the bus, come by car, and walk to school in Mrs. Harmon's class of 30 students, we will calculate each percentage based on the total number of students.

1. Students who ride the bus: \[ 70% \text{ of } 30 = 0.70 \times 30 = 21 \text{ students} \]

2. Students who come to school by car: \[ 20% \text{ of } 30 = 0.20 \times 30 = 6 \text{ students} \]

3. Students who walk to school: \[ 10% \text{ of } 30 = 0.10 \times 30 = 3 \text{ students} \]

Putting it all together:

• Students who ride the bus: 21
• Students who come to school by car: 6
• Students who walk to school: 3

So, in Mrs. Harmon's class of 30 students, 21 students ride the bus, 6 students come to school in a car, and 3 students walk to school.