The given sentence 21 is 35 of what number means that
21 is 35 % of what number
Let that number be P
=> 35P/100 = 21
35P = 2100
P = 2100/35 = 300/5 = 60
Hence, 21 is 35 of 60.
Mass of zinc ore = 8000 kg
Mass of metal = 60% of 8000 = 4800 kg
Mass of silver in metal = 3/4 x 4800/100 = 36 kg
Mass of zinc = 4800 - 36 = 4764 kg.
6% of 350000
Hence, 6% of 3,50,000 = 21,000.
20% of 120
20 x 120/100
= 4 x 6
= 24
Hence, 20% of 120 = 24.
From the given data,
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