Young's formula for determining the medicine dosage for children aged 1 - 12 years is:
\(\text{Dosage} = \dfrac{\text{Age of child (years)}\ \times\ \text{Adult dose}}{\text{Age of child (years) } +\ 12}\)
The spreadsheet below is used as a calculator for determining an child's medicine dosage according to Young's formula.
Young's formula for calculating an 8 year old child's dosage has been used in cell B9. Using appropriate cell references, the correct formula to input into cell B9 is:
- \(=\text{B5}^*\text{B6}/\text{B5}+12\)
- \(=(\text{B5}^*\text{B6})/\text{B5}+12\)
- \(=\text{B5}^*\text{B6}/(\text{B6}+12)\)
- \(=(\text{B5}^*\text{B6})/(\text{B5}+12)\)