Question

In Saras class, 2/5 of the students ride a bus, and 1/3 ride a car to school. The rest walk to school. Explain how you can find the fraction of students who walk to school. Find the fraction of students who ride a bus or car to school. Draw a diagram and use an equation to find your answer. Find the fraction of students who walk to scool. Draw a diagram and use an equation to find your answer.

Answer 1

See explanation

Explanation:

In Saras class,
`(2)/(5)` of the students ride a bus, and
`(1)/(3)` ride a car to school.

The rest

`1-(2)/(5)-(1)/(3)=(15-6-5)/(15)=(4)/(15)`

walk to school (simply subtract from one whole the fractions of students).

The fraction of students who ride a bus or car to school is

`(2)/(5)+(1)/(3)=(6+5)/(15)=(11)/(15).`

See attached diagram for pictorial representations (red diagram shows the fraction of students who ride a bus, blue - ride a car, green - walk to school)