Sure! Let's go through the solution step by step:
1. Determine the Rate per Banana:
- We know that the rate is 4 per dozen.
- A dozen contains 12 bananas.
- To find the rate per banana, we need to divide the total cost for a dozen by 12.
- Therefore, the rate per banana is:
[tex]\[
\text{Rate per banana} = \frac{4}{12}
\][/tex]
- Using this calculation, the rate per banana is approximately:
[tex]\[
\text{Rate per banana} = 0.333\overline{3}
\][/tex]
2. Calculate the Cost for 18 Bananas:
- Now that we know the rate per banana, we multiply this rate by the number of bananas we need, which is 18.
- To find the total cost, we use:
[tex]\[
\text{Total cost} = 18 \times \text{Rate per banana}
\][/tex]
- Substituting the previously calculated rate per banana:
[tex]\[
\text{Total cost} = 18 \times 0.333\overline{3}
\][/tex]
- When we perform this multiplication, the total cost is:
[tex]\[
\text{Total cost} = 6.0
\][/tex]
Therefore, the cost of 18 bananas at the rate of 4 per dozen is 6.0 units.
