Multiple choice

In a 135 liter of mixture, ratio of water and milk is 2: 7. If water is added in the above mixture in such a way so that final amount of the water in the mixture becomes twice of the initial amount which was in the mixture then what is the ratio of water and milk in the resulting mixture? 135 लीटर मिश्रण में, पानी और दूध का अनुपात 2: 7 है। यदि उपर्युक्त मिश्रण में पानी इस तरह से मिलाया जाता है कि मिश्रण में पानी की अंतिम मात्रा प्रारंभिक मात्रा का दो गुना हो जाती है तो परिणामी मिश्रण में पानी और दूध का अनुपात क्या है?

  1. 7: 15

  2. 4: 7

  3. 14: 25

  4. 8: 13

  5. 9: 14

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Initial mixture: 135 liters with water:milk = 2:7. Water = (2/9) × 135 = 30 liters, Milk = (7/9) × 135 = 105 liters. Water is added so final water = 2 × initial water = 2 × 30 = 60 liters. Additional water added = 60 - 30 = 30 liters. Final mixture has Water = 60 liters, Milk = 105 liters (unchanged). Ratio water:milk = 60:105 = 12:21 = 4:7 after dividing by 15.