In Ms. Smith's class, the ratio of students that walk to school to students that take the subway is 1:2. The ratio of students that take the subway to students that take the bus is 1:3. If 3 students walk to school, how many students take the bus?

A. 6 students B. 18 students C. 9 students D. 8 students

Question

Mathematics

Tomas Garrett

26 September, 17:53

In Ms. Smith's class, the ratio of students that walk to school to students that take the subway is 1:2. The ratio of students that take the subway to students that take the bus is 1:3. If 3 students walk to school, how many students take the bus?

A. 6 students B. 18 students C. 9 students D. 8 students

+5

Answers (2)

Know the Answer?

Angelina Thompson · Answer 1

Angelina Thompson 26 September, 20:36

0

Answer: student A

Derrick Rose · Answer 2

Let y and z be the no. of students that walk to school, that takes the subway and that takes the bus

We have,

3/y = 1/2

=> y = 6 - - - (1)

and,

y/z = 1/3

=> y/z = 1/3 [from (1) ]

=> z = 18

Hence the no. of students that takes the bus are 18 students