The ratio of spirit and water in two mixtures of 20 litres and 36 litres is 3 : 7 and 7 : 5 respectively. Both the mixtures are mixed together. Now the ratio of the spirit and water in the new mixture is ?

• ক 18 : 29
• খ 20 : 29
• গ 23 : 25
• ঘ 27 : 29 ✅ সঠিক উত্তর