csatmedium
Two equal glasses of same type are respectively 1/3 and 1/4 full of milk. They are then filled up with water and the contents are mixed in a pot. What is the ratio of milk and water in the pot?
- A.7 : 17
- B.1 : 3
- C.9 : 21
- D.11 : 23
▶ Answer & Explanation
Correct answer: D. 11 : 23
When the glasses are filled with water, the original quantities of milk (1/3 and 1/4) represent fractions of the total volume. After adding water to fill them, the total volume in each glass becomes equal. Combining these equal volumes results in a total amount of milk that is the sum of the initial milk quantities and a total amount of water that fills the remaining portions of the glasses. The final ratio of milk to water is derived by summing these components.
Source: UPSC csat 2015