1. Problem c) Calculate $2419 \div 3$. 2. Problem d) Calculate $18205 \div 3$. 3. For the sales income problem, we have three items A, B, and C with total incomes Nu 18500, Nu 3400, and Nu 6900 respectively. 4. We need to determine which item corresponds to which price (Nu 200, Nu 300, Nu 500) using divisibility tests. 5. Divisibility by 200 means the total income must be divisible by 200. 6. Divisibility by 300 means the total income must be divisible by 300. 7. Divisibility by 500 means the total income must be divisible by 500. 8. Check item A: 18500 is divisible by 500 (since it ends with two zeros and 18500/500 = 37), so item A likely sold at Nu 500. 9. Check item B: 3400 is divisible by 200 (3400/200 = 17), so item B likely sold at Nu 200. 10. Check item C: 6900 is divisible by 300 (6900/300 = 23), so item C likely sold at Nu 300. 11. Now, calculate the divisions: $c)\ 2419 \div 3 = 806.333...$ (not exact, so 2419 is not divisible by 3) $d)\ 18205 \div 3 = 6068.333...$ (not exact, so 18205 is not divisible by 3) Final answers: $c)\ 2419 \div 3 = 806.333...$ (not divisible exactly) $d)\ 18205 \div 3 = 6068.333...$ (not divisible exactly) Sales prices: Item A: Nu 500 Item B: Nu 200 Item C: Nu 300