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.
Comments
There are no comments.Copyright ©CuriousTab. All rights reserved.