1. **State the problem:** Jonny, Nathan, and Ali share candy canes in the ratio 4 : 2 : 3. Ali has 12 candy canes. We need to find how many candy canes Jonny has. 2. **Understand the ratio:** The ratio 4 : 2 : 3 means for every 4 parts Jonny gets, Nathan gets 2 parts, and Ali gets 3 parts. 3. **Find the value of one part:** Ali's share corresponds to 3 parts and equals 12 candy canes. Use the formula for one part: $$\text{one part} = \frac{\text{Ali's candy canes}}{\text{Ali's ratio parts}} = \frac{12}{3} = 4$$ 4. **Calculate Jonny's candy canes:** Jonny has 4 parts, so: $$\text{Jonny's candy canes} = 4 \times \text{one part} = 4 \times 4 = 16$$ 5. **Answer:** Jonny has 16 candy canes.