The cost of 4 dozen papers is Rs. 24. The cost of 1 score of papers (in rupees) is ?

A. 40

B. 20

C. 10

D. 42

Answer: Option C

Solution(By Examveda Team)

1 score of papers = 20 papers
Cost of 4 dozen papers = Rs.24
Cost of 20 papers
$$\eqalign{ & = \frac{{24}}{{4 \times 12}} \times 20 \cr & = {\text{Rs}}{\text{.10}} \cr} $$