1. **Problem statement:** Find the total number of items sold by all companies. 2. **Given data:** - Company A: Produced 40 hundreds, sold 60% of items - Company B: Produced 55 hundreds, sold 36% of items - Company C: Produced 80 hundreds, sold 75% of items - Company D: Produced 50 hundreds, sold 70% of items - Company E: Produced 60 hundreds, sold 50% of items - Company F: Produced 75 hundreds, sold 48% of items 3. **Formula:** Number of items sold by a company = Number of items produced \times Percentage sold 4. **Calculate items sold by each company:** - A: $40 \times 100 \times \frac{60}{100} = 40 \times 60 = 2400$ - B: $55 \times 100 \times \frac{36}{100} = 55 \times 36 = 1980$ - C: $80 \times 100 \times \frac{75}{100} = 80 \times 75 = 6000$ - D: $50 \times 100 \times \frac{70}{100} = 50 \times 70 = 3500$ - E: $60 \times 100 \times \frac{50}{100} = 60 \times 50 = 3000$ - F: $75 \times 100 \times \frac{48}{100} = 75 \times 48 = 3600$ 5. **Sum total items sold:** $$2400 + 1980 + 6000 + 3500 + 3000 + 3600 = 20480$$ 6. **Answer:** The total number of items sold by all companies is **20480**. This corresponds to option 4) 20480.