Question

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

Answer:

We have,

Calcium:Carbon:Oxygen=10:3:12

Then,

Total parts is =10+3+12=25

Now

Carbon%=Carbon / total ×100

=3 / 25×100

=3×4

=12%

hope it will help you brother

Answer 2

Answer:

12% is carbon

Step-by-step explanation:

Calcium, carbon and oxygen = 10:3:12

= 10+3+12 = 25

=3/25 multiplied by 100

= 12%