Answer:
Mrs. Henderson's class has the greater ratio of boys to students.
Explanation:
Mrs. Henderson has 16 boys in her class of 24 students.
The ratio of boys to students,
16:24 = 2:3 = 0.67
Mr. Gregory has 18 boys in his class of 30 students.
The ratio of boys to students,
18:30 = 3:5 = 0.6
Therefore, Mrs. Henderson's class has better ratio.