Out of the total production of iron from hematite, an ore of Iron, 20% – McqOptions

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1.	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
A.	5,00,000 kg
B.	4,00,000 kg
C.	4,50,000 kg
D.	None of these
Answer» C. 4,50,000 kg

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