Answer:
The correct answers are the possible ratios are 3 : 1; 6 : 2; 9 : 3.
Explanation:
There are 18 boys and 6 girls in a room.
The factors of 6 are given by 1, 2, 3 and 6.
Thus all of the possible ratios of boys to girls that could be made are given by dividing the given ration by the factors of 6.
The possible ratio when divided by 2 is 9 : 3. This means for every 9 boys there are 3 girls.
The other possible ratio when divided by 3 is 6 : 2. This means for every 6 boys there are 2 girls.
The other possible ratio when divided by 6 is 3 : 1. This means for every 3 boys there is 1 girl.