There is a milk sample with 50% water in it. If 1/3rd of this milk is added to equal amount of pure milk, then water in the new mixture will fall down to

1. Analyze the components: We are mixing a 'Milk Sample' and 'Pure Milk'.\n2. Identify properties: The Milk Sample has 50% water. Pure Milk has 0% water (it is 100% milk).\n3. Identify the ratio: The question states we take a portion (1/3rd) of the first and mix it with an 'equal amount' of the second. As seen in similar PYQs about 'Two equal glasses' [30], [51], the key phrase here is 'equal amount'. This means the mixing ratio is 1:1.\n4. Apply the Logic of Averages: When mixing equal amounts, the new percentage is simply the average of the two percentages. This uses the 'Balance Point' logic [60].\n5. Calculate: Average of 50% and 0% is (50 + 0) / 2 = 25%.\n6. Sanity Check: We are adding pure milk, so the water concentration must decrease. It effectively dilutes the water by half because the total volume doubles while the water amount stays the same.