Question

If the cost of $12$ books is Rs. $144$, then the cost of $18$ books is

• A. Rs. $206$
• B. Rs. $180$
• C. Rs. $216$
• D. Rs. $198$

Answer 1

Answer: (C)

Given cost of $12$ books is Rs. $144$.

Then cost of $1$ book is Rs. $\frac{144}{12}=12$.

Then the cost of $18$ books is Rs. $12\times 18=216$.