Final answer:
To find the fraction of Lincoln Elementary School students who walk to school, you subtract the bus riders (2/5) and car riders (5/12) from the total. 98 students are bus or car riders, leaving 22 students who walk. The fraction of students who walk is simplified to 11/60.
Step-by-step explanation:
To find the fraction of students at Lincoln Elementary School who walk to school, we need to subtract the fractions of students who either ride the bus or are driven by their parents from the total number of students. The number of students who ride the bus is 2/5 of the 120 students, and the number of students who have a parent drive them to school is 5/12.
First, calculate the number of students taking the bus: 2/5 of 120 = 48 students.
Next, calculate the number of students driven by a parent: 5/12 of 120 = 50 students.
Add the two numbers together to find the total number of students who do not walk:
48 (bus riders) + 50 (car riders) = 98 students.
Subtract this number from the total number of students to find how many walk:
120 (total students) - 98 (non-walkers) = 22 students walk to school.
To find the fraction of students who walk, divide the number of walkers by the total number of students:
22/120. This fraction can be simplified by dividing both the numerator and the denominator by the greatest common divisor, which is 2. Hence, 11/60 of the students walk to school.