1. **State the problem:** You have 80000 birr and want to buy fuel at two different prices: 131.90 birr per liter and 129.31 birr per liter. We want to find how many liters you can buy at each price and check if the money will be completely spent. 2. **Formula used:** To find the liters you can buy, use the formula: $$\text{liters} = \frac{\text{total money}}{\text{price per liter}}$$ 3. **Calculate liters at 131.90 birr per liter:** $$\text{liters}_1 = \frac{80000}{131.90} \approx 606.71$$ liters 4. **Calculate liters at 129.31 birr per liter:** $$\text{liters}_2 = \frac{80000}{129.31} \approx 618.88$$ liters 5. **Check if money is completely spent:** - For 131.90 birr per liter, buying 606.71 liters costs: $$606.71 \times 131.90 = 80000$$ birr (approximately) - For 129.31 birr per liter, buying 618.88 liters costs: $$618.88 \times 129.31 = 80000$$ birr (approximately) **Final answer:** - You can buy approximately 606.71 liters at 131.90 birr per liter. - You can buy approximately 618.88 liters at 129.31 birr per liter. - The money will be completely spent in both cases.