You receive a prescription for a baby containing the following dosing regimen of suspension A:

Take 6.5 mL twice a day for 14/7 then;

Take 3.5 mL twice a day for 10/7 then;

Take 1.5 mL three times a day for 7/7 then;

Take 1 mL once a day for 5/7

What volume (mL) of suspension A do you need to dispense for the full treatment course? Give your answer to 1 decimal place.

To calculate the total volume of suspension A required for the full treatment course, we need to sum the volumes used during each stage of the regimen.

1. **First stage**: Take 6.5 mL twice a day for 14 days.
   \[
   \text{Total for first stage} = 6.5 \, \text{mL} \times 2 \, \text{times/day} \times 14 \, \text{days} = 6.5 \times 2 \times 14 = 182 \, \text{mL}
   \]

2. **Second stage**: Take 3.5 mL twice a day for 10 days.
   \[
   \text{Total for second stage} = 3.5 \, \text{mL} \times 2 \, \text{times/day} \times 10 \, \text{days} = 3.5 \times 2 \times 10 = 70 \, \text{mL}
   \]

3. **Third stage**: Take 1.5 mL three times a day for 7 days.
   \[
   \text{Total for third stage} = 1.5 \, \text{mL} \times 3 \, \text{times/day} \times 7 \, \text{days} = 1.5 \times 3 \times 7 = 31.5 \, \text{mL}
   \]

4. **Fourth stage**: Take 1 mL once a day for 5 days.
   \[
   \text{Total for fourth stage} = 1 \, \text{mL} \times 1 \, \text{time/day} \times 5 \, \text{days} = 1 \times 1 \times 5 = 5 \, \text{mL}
   \]

### Now, sum all the stages:
\[
\text{Total volume} = 182 \, \text{mL} + 70 \, \text{mL} + 31.5 \, \text{mL} + 5 \, \text{mL} = 288.5 \, \text{mL}
\]

So, the total volume of suspension A to be dispensed is **288.5 mL**.

Would you like further details or clarification on any part of the calculation?

Here are 5 related questions to expand your understanding:
1. What is the importance of calculating correct dosages for different age groups?
2. How can errors in dosage calculations affect treatment outcomes?
3. How would you handle a situation where the prescribed volume exceeds the available suspension size?
4. What units are commonly used in dosage calculations besides milliliters?
5. How do frequency and duration of a medication regimen impact total dosage volume?

**Tip:** When calculating dosages, always double-check the frequency (e.g., twice a day vs. once a day) to avoid medication errors.

You receive a prescription for a baby containing the following dosing regimen of suspension A: Take 6.5 mL twice a day for 14/7, then; Take 3.5 mL twice a day for 10/7, then; Take 1.5 mL three times a day for 7/7, then; Take 1 mL once a day for 5/7. What volume (mL) of suspension A do you need to dispense for the full treatment course? Give your answer to 1 decimal place.

Learn how to calculate the total volume of medication required for a baby's dosing regimen. This problem breaks down each stage of dosage, including detailed multiplication and addition steps to arrive at the final volume of 288.5 mL. Suitable for students in Grades 5-7.

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