A vendor buys 20 pens for Rs.15 and sells them at 15 for Rs. 20. How many pens should be bought and sold to earn a profit of Rs. 245?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 420.
The vendor buys 20 pens for ₹15.
CP per pen = 15/20 = 0.75(₹ per pen)
The vendor sells 15 pens for ₹20.
SP per pen = 20/15 = 1.333(₹ per pen)
Profit per pen = ₹1.33 - ₹0.75 = ₹0.58 (approximately)
Number of pens = ₹245/₹0.58 ≈ 420