SSC CPO Tier 1 Exam 28 June 2024 Shift 3

A vegetable vendor bought 100 kg of potatoes at the rate of Rs. 19 per kg and spent Rs. 100 as cartage. He sold 60 kg of potatoes with a 50% profit and half of the remaining stock with a 40% profit. He sold half of the still remaining potatoes with a 25% profit. What profit percentage should he aim for when selling the ultimate remaining potatoes to achieve an overall profit of 42%?