Question

Cost of $5$ pens is Rs. $15$. Find the cost price of $100$ pens.

• A. Rs. $150$
• B. Rs. $30$
• C. Rs. $100$
• D. Rs. $300$

Answer 1

The correct option is D Rs. $300$

Cost of $5$ pens $=Rs.15$
Cost of $1$ pen $=Rs.\frac{15}{5}=Rs.3$
Cost of $100$ pens $=Rs,\left[\begin{array}{c}3\times 100\end{array}\right]=Rs.300$