Exams › IBPS PO › Quantitative Aptitude

A container is full of a mixture of milk and water containing 40% water. A part of this mixture is replaced by another mixture containing 81% milk and the rest water. After replacement, the percentage of milk in the new mixture is 74%. Find the quantity of the mixture replaced.

1. 1/3
2. 2/3
3. 2/5
4. 3/5

Correct answer: 2/3

Solution

Initially the mixture has 60% milk. The replaced part is substituted with a mixture having 81% milk, and the final milk percentage becomes 74%. Using the standard replacement formula, the fraction replaced comes out to be 2/3.

Related IBPS PO Quantitative Aptitude questions

• Q86. A mixture contains milk and water in the ratio $4:1$. If 20% of the mixture is taken out and the same amount of milk and water is added to the mixture, then the difference between milk and water in the final mixture becomes 72 litres. Find the initial amount of the mixture.
• In a 60-litre mixture, the ratio of milk and water is 2:1. If this ratio is to be changed to 1:2, then the quantity of water to be further added is:
• A vessel is filled with liquid, 3 parts of which are water and 5 parts syrup. How much of the mixture must be drawn off and replaced with water so that the mixture becomes half water and half syrup?
• Tea worth Rs. 126 per kg and Rs. 135 per kg are mixed with a third variety in the ratio 1:1:2. If the mixture is worth Rs. 153 per kg, what is the price of the third variety per kg?
• A can contains a mixture of two liquids A and B in the ratio 7:5. When 9 litres of the mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7:9. How many litres of liquid A were initially in the can?
• A milk vendor has two cans of milk. The first contains 25% water and the rest milk. The second contains 50% water. How much milk should he mix from each container to get 12 litres of mixture such that the ratio of water to milk is 3:5?

⚔️ Practice IBPS PO Quantitative Aptitude free + battle 1v1 →