Young’s formula below is used to calculate the required dosages of medicine for children aged 1–12 years.
  

How much of the medicine should be given to an 18-month-old child in a 24-hour period if each adult dosage is 27 mL? The medicine is to be taken every 8 hours by both adults and children.

1. 3 mL
2. 6 mL
3. 9 mL
4. 12 mL

The formula    is used to calculate the dosage of liquid paracetamol to be given to a child.

• • is the dosage of liquid paracetamol in millilitres (mL).
  • is the age of the child in months.

1. If Charlotte is six months old, what dosage of liquid paracetamol should she be given?  (1 mark)
   

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The correct dosage of liquid paracetamol for Teddy is 6 mL.

2. What is the difference in the ages of Teddy and Charlotte, in months?  (3 marks)
   

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Young’s formula, shown below, is used to calculate the dosage of medication for children aged 1−12 years based on the adult dosage.

 
A child’s dosage is calculated to be 15 mg, based on an adult dosage of 30 mg.

How old is the child in years?

1. 6
2. 8
3. 10
4. 12

Fried's formula is used to calculate the medicine dosages for children aged 1-2 years.
 

Liam is 1.75 years old and receives a daily dosage of 350 mg of a medicine.

According to Fried's formula, what would the appropriate adult daily dosage of the medicine be?  (2 marks)

Clark’s formula, given below, is used to determine the dosage of medicine for children.
 

 
For a particular medicine, the adult dosage is 220 mg and the correct dosage for a specific child is 45 mg.

How much does the child weigh, to the nearest kg?  (2 marks)

Clark’s formula is used to determine the dosage of medicine for children.
 

The adult daily dosage of a medicine contains 1750 mg of a particular drug.

A child who weighs 30 kg is to be given tablets each containing 125 mg of this drug.

How many tablets should this child be given daily?  (2 marks)