Colin ties 5 groups of balloons to the fence. There are 3 orange balloons

ok? what is the question?

45 balloons.

Step-by-step explanation:

The complete question is:

Colin ties 5 groups of balloons to the fence. There are 3 orange balloons, 2 blue balloons, and 4 green balloons in each group. How many balloons does Colin use?

We know that in each group we have:

3 orange. 2 blue. 4 green.

So, we have 9 balloons per group and 5 groups. We have to multiply 9 by 5 groups, we have 45 balloons in total.

Therefore, there are 45 balloons in total.