Question

chalk contains calcium carbon and oxygen in the ratio of 10:3:12 find the percentage of carbon in chalk.
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Answer 1

Answer:

12%

Step-by-step explanation:

let the Ca weight be 10x

let the C weight be 3x

let the O weight be 12x

% of carbon =(3x/10x+3x+12x)100

%of carbon=(3x/25x)100

% of carbon =(3/25)100

% of carbon=12

Answer 2

Answer:

Step-by-step explanation:

10x + 3x+ 12x= 100

25 x=100

x= 4

carbon content is 3 x 4 = 12%