Correct Answer - Option 4 : Rs. 3080
Given:
The cost of 360 pens is Rs. 7920
Calculation:
According to the question,
Cost of 360 pens = Rs. 7920
⇒ cost of 1 pen = 7920/360
⇒ Rs. 22
Then,
Cost of 140 pens = 140 × 22
⇒ Rs. 3080
∴ The cost of 140 pens is Rs. 3080.