1. **State the problem:** Jhia runs 100 m four times each training day. Last week she trained 4 days, this week 5 days. We need to find the total metres she ran in the last 2 weeks. 2. **Formula:** Total distance = (distance per run) \times (runs per day) \times (number of days) 3. **Calculate last week's distance:** $$100 \times 4 \times 4 = 1600 \text{ metres}$$ 4. **Calculate this week's distance:** $$100 \times 4 \times 5 = 2000 \text{ metres}$$ 5. **Calculate total distance for 2 weeks:** $$1600 + 2000 = 3600 \text{ metres}$$ 6. **Answer:** Jhia ran a total of **3600 metres** in the last 2 weeks.