RRB ALP CBT I 16 Feb 2026 Shift 1 Paper

Concept:In a chain of sales, the Selling Price of one person becomes the Cost Price for the next buyer.Any overhead expense like transportation is added to the purchase price to get the effective Cost Price.Explanation:Arvind sells to Biru at a loss of 30%.So, Arvind's Selling Price is:$SP_{\text{Arvind}} = x \times \frac{100 - 30}{100} = 0.7x$Biru adds ₹198 for transportation, so Biru's effective Cost Price is:$CP_{\text{Biru}} = 0.7x + 198$Biru sells to Minu at a profit of 50%, and Minu pays ₹1,053.Therefore:$(0.7x + 198) \times \frac{100 + 50}{100} = 1053$$(0.7x + 198) \times 1.5 = 1053$$0.7x + 198 = 1053 \div 1.5 = 702$$0.7x = 702 - 198 = 504$$x = 504 \div 0.7 = 720$So, Arvind's original cost price is ₹720.Answer:$x = 720$Correct option: D. 720