Answer:
the ratio is 9 ÷ 49
Step-by-step explanation:
The computation of the ratio of the number of students who walk to the total number of students is shown below:
= 45 students ÷ ( 45 + 150 + 50)
= 45 students ÷ 245 students
= 9 ÷ 49
Hence, the ratio is 9 ÷ 49
