Multiple choice

A mixture of 20 litres of sprit and water contains 10% water. After adding a certain amount of water, the weight of the new mixture is 25 litres. What is the percentage of water in the new mixture? 20 लीटर स्प्रिट और पानी के मिश्रण में, 10% पानी है | एक निश्चित मात्रा में पानी मिलाने के बाद, नए मिश्रण का भार 25 लीटर है | नए मिश्रण में पानी का प्रतिशत क्या है?

  1. 18%

  2. 28%

  3. 12.5%

  4. 15%
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B Correct answer
Explanation

Initial mixture: 20 liters with 10% water = 2 liters water, 18 liters spirit. After adding water, total becomes 25 liters, so 5 liters water added. New water content = 2 + 5 = 7 liters. Percentage = 7/25 × 100 = 28%.

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