If the cost of four dozen pens is ₹ 120, then how many pens can be purchased for ₹35?

Correct option is D

​$$\textbf{Given:} \\\text{Cost of 4 dozen pens} = ₹120 \\\text{1 dozen} = 12 \text{ pens} \Rightarrow 4 \text{ dozen} = 4 \times 12 = 48 \text{ pens} \\[10pt]\text{So, cost of 48 pens} = ₹120 \\[5pt]\text{Cost of 1 pen} = \frac{120}{48} = ₹2.50 \\[10pt]\text{Now, number of pens that can be purchased for ₹35:} \\\text{Number of pens} = \frac{35}{2.5} = 14 \\[10pt]\boxed{\text{The correct answer is: (d) 14}}$$​​