Out of the total production of iron from hematite, an ore of Iron, 20% of the ore gets wasted, and out of the remaining iron, only 25% is pure iron. If the pure iron obtained in a year from a mine of hematite was 80,000 kg, then the quantity of hematite mined from that mine in the year is

• ক 4,00,000 kg ✅ সঠিক উত্তর
• খ 5,00,000 kg
• গ None of these
• ঘ 4,50,000 kg