The percentage of metals in a mine of lead ore is 60%. Now the percentage of silver is $$\frac{3}{4}$$% of metals and the rest is lead. If the mass of ore extracted from this mine is 8000 kg, the mass (in kg.) of lead is :
A. 4763
B. 4764
C. 4762
D. 4761
Answer: Option B
Solution(By Examveda Team)
Mass of lead ore = 8000 kg⇒ Mass of metal in lead ore
= 60% of 8000
= 4800 kg
⇒ Mass of silver in metal
= $$\frac{3}{4}$$% of 4800
= 36 kg
⇒ Mass of lead in ore
= 4800 - 36
= 4764 kg
This Question Belongs to Arithmetic Ability >> Percentage
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