IBPS PO RRB PO Prelims 5 Aug 2023 Shift 1 Paper

475 Liter of mixture contains milk and water in the ratio of 12 : b respectively, after addition of 42 liter of milk and 53 liter of water then the ratio of the milk and water becomes in the resultant mixture becomes 9 : 10 respectively, then find the quantity of water Initially ?