railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Profit and Loss Successive Selling
If a man sold 20 books for Rs. 1800, gaining there by the cost price of 5 books, then find the cost price of a book.
1
Rs. 68
2
Rs. 50
3
Rs. 85
4
Rs. 72