When ram sells 17 pens at Rs.720, he bears a loss which is equal to the cost…
2024
When ram sells 17 pens at Rs.720, he bears a loss which is equal to the cost price of 5 pens. What is the cost price of one pen?
- A.
60
- B.
69
- C.
67
- D.
56
Attempted by 8 students.
Show answer & explanation
Correct answer: A
Key idea: The loss on selling 17 pens equals the cost price of 5 pens.
Let the cost price of one pen be x. Then cost price of 17 pens = 17x and selling price of 17 pens = 720.
Given loss = cost price of 5 pens = 5x, so 17x − 720 = 5x.
Solve: 17x − 720 = 5x ⇒ 12x = 720 ⇒ x = 720/12 = 60.
Answer: The cost price of one pen is Rs. 60.