Answer:
Given
Let number of students who have a pet denoted by "X" And number of students who do not have a pet denoted by "Y"
Step-by-step explanation:
Ratio of students who have a pet = [100 - (X/Y * 100)]
Ratio of students who have a pet = [100 - (30/47 * 100)]
Ratio of students who have a pet = [100 - (67.8)]
Ratio of students who have a pet = 36.2