1. **State the problem:** We have the cost of one newspaper as 150 and one magazine as 350. A vendor sold 36 newspapers and 19 magazines. We need to estimate the total money received and find the difference between the estimate and the exact total. 2. **Formula and rules:** Total cost = (number of newspapers \times cost per newspaper) + (number of magazines \times cost per magazine) 3. **Calculate the exact total:** $$\text{Exact total} = 36 \times 150 + 19 \times 350$$ $$= 5400 + 6650 = 12050$$ 4. **Estimate the costs:** Round 150 to 200 (nearest hundred), and 350 to 400. $$\text{Estimated total} = 36 \times 200 + 19 \times 400$$ $$= 7200 + 7600 = 14800$$ 5. **Find the difference between estimate and exact:** $$\text{Difference} = 14800 - 12050 = 2750$$ **Final answers:** - Estimated amount received: 14800 - Exact amount received: 12050 - Difference between estimate and exact: 2750