300 ml mixture of milk and water have milk and water in ratio 5 : 1. 42ml of mixture is withdrawn and 3ml milk and 3ml water is added to mixture. What will be the ratio of milk and water in the new mixture?

Explanation

Initial quantity of milk = 5/6 × 300 = 250 ml Initial quantity of water in mixture = 300 – 250 = 50 ml Quantity of milk withdrawn with 42 ml of mixture = 5/6 × 42 = 35 ml Quantity of water withdrawn with 42ml of mixture = 42 – 35 = 7 ml Quantity of milk in new mixture = 250 – 35 + 3 = 218 ml Quantity of water in new mixture = 50 – 7 + 3 = 46 ml Required ratio = 218 : 46 = 109 : 23 IBPS RRB Scale I 2021 Prelims Memory Based Paper