Multiple choice

The ratio of the milk and water in two mixtures of 20 litre and 36 litre is 3 : 7 and 7 : 5 respectively. Both the mixtures are mixed together. Now the ratio of the milk and water in the new mixture is 20 लीटर और 36 लीटर के दो मिश्रणों में दूध और पानी का अनुपात क्रमशः 3 : 7 और 7 : 5 है |दोनों मिश्रणों को मिलाया गया है | अब नए मिश्रण में दूध और पानी का अनुपात है

  1. 25 : 29

  2. 9 : 10

  3. 27 : 29

  4. 27 : 31
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In first mixture (20L, ratio 3:7): milk = 3/10 × 20 = 6L, water = 7/10 × 20 = 14L. In second mixture (36L, ratio 7:5): milk = 7/12 × 36 = 21L, water = 5/12 × 36 = 15L. When mixed: total milk = 6 + 21 = 27L, total water = 14 + 15 = 29L. Ratio = 27:29. Option A (25:29) undercounts milk, option B (9:10) simplifies incorrectly, and option D (27:31) overcounts water.

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