Answer:
Step-by-step explanation:
Group A
The number of persons in the group = 300
Two-fifths of the people in group A will be selected to win $15 fuel cards.

Therefore:

Group B
The number of persons in the group =439
Since they will receive the same number(120) of fuel cards:

Therefore, the ratio of nonwinners in group A to nonwinners in group B after the selections are made will be: