Answer:
a) $40
b) $15
Explanation:
How much will 24 balloons cost?
To get 24 balloons we will have to multiply 6 by 4.
6 x 4 = 24
Now, since 6 balloons cost $10, and we need 4 sets of 6 balloons to get 24, we are going to multiply 4 by 10.
4 x 10 = 40
Your answer to the first question would be $40
How much will 9 balloons cost?
To get the cost for 9 balloons we have to assume that the cost for 3 balloons is $5
If we assume this, then the cost for 9 balloons would be $15