Multiple choice

One vessel contains water and another vessel contains spirit. Half of the water is poured into the spirit and an equal quantity of the mixture is poured back into the water. If the first vessel contained water and spirit in the ratio of 9 : 4, compare the ratio of initial quantities of water and spirit in two vessel.

  1. 1 : 2

  2. 3 : 4

  3. 2 : 3

  4. 5 : 4

  5. 4 : 5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The problem describes a process of swapping mixtures between two vessels. Given the ratio 9:4 in the first vessel and the nature of the exchange, the initial quantities must satisfy the conservation of the total volume and the specific ratio provided. Solving the balance equations leads to the ratio 5:4.

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