Multiple choice

A mixture of milk and water is in the ratio 3 : 2 and the total quantity of the mixture is 20 liters. How much milk must be added to the mixture so that the ratio of milk to water becomes 4 : 1?

  1. 14 lit

  2. 20 lit

  3. 23 lit

  4. 15 lit

  5. 17 lit
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Initial: Milk = 12, Water = 8. Let x be milk added. (12+x)/8 = 4/1. 12+x = 32. x = 20.

AI explanation

The initial 20-liter mixture contains milk and water in a 3:2 ratio, meaning there are 12 liters of milk and 8 liters of water. To make the ratio of milk to water 4:1 by adding only milk, the 8 liters of water must represent the 1 part of the new mixture. This requires 4 parts of milk, which is 32 liters, so subtracting the original 12 liters of milk means 20 liters of milk must be added.

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