Question

Two dozen balloons cost $3.20. At that rate, what would be the cost of 45 balloons?
A) $7.20
B) $6.00
C) $6.80
D) $7.00

Answer 1

To find the cost of 45 balloons, we first need to determine the cost per balloon from the information given.

We know that:
- Two dozen balloons (which is 24 balloons) cost $3.20.

First, we calculate the cost per balloon:

\[
\text{Cost per balloon} = \frac{\text{Total cost}}{\text{Number of balloons}} = \frac{3.20}{24}
\]

Calculating that gives:

\[
\text{Cost per balloon} = \frac{3.20}{24} = 0.1333 \text{ (repeating or approximately 0.1333)}
\]

Now, we need to find the cost of 45 balloons. To do this, we multiply the cost per balloon by the number of balloons:

\[
\text{Cost for 45 balloons} = \text{Cost per balloon} \times 45 = 0.1333 \times 45
\]

Calculating that gives:

\[
\text{Cost for 45 balloons} = 0.1333 \times 45 = 6.00
\]

Thus, the cost of 45 balloons is \( \boxed{6.00} \).