Multiple choice

In a mixture of 30 litres, the ratio of milk to water 2 : 1. The amount of water to be further added to the mixture so as to make the ratio of the milk to water 1 : 2 will be ?

  1. 45 litres

  2. 60 litres

  3. 30 litres

  4. 40 litres
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Initial mixture: 30L, ratio 2:1 (20L milk, 10L water). Let x be water added. New ratio: 20/(10+x) = 1/2. So 40 = 10+x, x = 30L.

AI explanation

The initial 30 litre mixture has a milk to water ratio of 2 to 1, meaning there are 20 litres of milk and 10 litres of water. Let x be the litres of water to add so that the ratio of milk to water becomes 1 to 2. This gives the equation 20 divided by (10 + x) equals 1 divided by 2, which solves to 40 equaling 10 + x, making x equal to 30. The amount of water to be added is 30 litres.

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