A mixture contains 80% milk by weight. If 36 grams of pure milk is added to 180 grams of this mixture, what will be the new percentage of milk in the resulting mixture?

Explanation

Initially, milk in the mixture = 80% of 180 g = 144 g. After adding 36 g of pure milk, total milk = 144 + 36 = 180 g. Total mixture weight = 180 + 36 = 216 g. Therefore, milk percentage = (180 / 216) × 100% = 83.33%, which does not match any of the given options.