Question

Q.31. Chalk contains Calcium, Carbon and Oxygen in the ratio 10 : 3 : 12. The percentage of Carbon in chalk is

(A) 48 %
(B) 24 %
(C) 40 %
(D) 12 %​

Answer 1

Answer:

I think the correct answer is 12%

Answer 2

Answer:

12 %

Step-by-step explanation:

Given ratio = 10 : 3 : 12

Total part = 10 + 3 + 12 = 25

Part of Carbon =

\frac{3}{25}

Percentage of Carbon part in chalk = \frac{3}{25}\times100=12\%