1. **Stating the problem:** You have 18,000,000 Rp and want to convert all of it into Ge, then find out how much $ it would take to buy that amount of Ge. 2. **Given:** - 1 Ge = 45 Rp - 150 Ge = 0.99 $ 3. **Step 1: Convert Rp to Ge** $$\text{Ge} = \frac{\text{Rp}}{45} = \frac{18000000}{45}$$ 4. Simplify the fraction: $$\frac{18000000}{45} = \frac{\cancel{18000000}^{400000} \times 45}{\cancel{45}} = 400000$$ So, you have 400,000 Ge. 5. **Step 2: Find how many $ are needed to buy 400,000 Ge** Since 150 Ge = 0.99 $ Use the unit rate: $$\text{Price per Ge} = \frac{0.99}{150}$$ 6. Calculate price per Ge: $$\frac{0.99}{150} = 0.0066$$ 7. Calculate total $ needed: $$\text{Total} = 400000 \times 0.0066 = 2640$$ **Final answer:** It would take 2640 $ to buy all your Rp converted into Ge.