Question

24.50 dollar for 1000 mL of shampoo
19.50 dollar for 800 mL of shampoo
12.00 dollar for 500 mL of shampoo
7.80 dollar for 300 mL

Answer 1

To determine which shampoo offers the best value based on price per milliliter, we can calculate the price per mL for each option.

1. **$24.50 for 1000 mL**
\[
\text{Price per mL} = \frac{24.50 \text{ dollars}}{1000 \text{ mL}} = 0.0245 \text{ dollars/mL}
\]

2. **$19.50 for 800 mL**
\[
\text{Price per mL} = \frac{19.50 \text{ dollars}}{800 \text{ mL}} = 0.024375 \text{ dollars/mL}
\]

3. **$12.00 for 500 mL**
\[
\text{Price per mL} = \frac{12.00 \text{ dollars}}{500 \text{ mL}} = 0.024 \text{ dollars/mL}
\]

4. **$7.80 for 300 mL**
\[
\text{Price per mL} = \frac{7.80 \text{ dollars}}{300 \text{ mL}} = 0.026 \text{ dollars/mL}
\]

Now we can summarize the price per mL for each option:

- 1000 mL: $0.0245/mL
- 800 mL: $0.024375/mL
- 500 mL: $0.024/mL
- 300 mL: $0.026/mL

**Best Value:** The 500 mL shampoo at $12.00 is the best value, costing $0.024 per mL.