Mixtures & Alligation · Question 4 · Easy
A 30-litre solution contains 20% alcohol. If 10 litres of water is added, what is the percentage of alcohol in the new solution?
- 12%
- 15%
- 18%
- 20%
Answer and explanation
Answer: B. 15%
Explanation: Alcohol = 20% of 30 = 6 L. New volume = 40 L, so alcohol = 6/40 × 100 = 15%.
Previous: A 60-litre mixture contains milk and water in the ratio 2 : 1. How much water… · Next: How many kg of sugar costing ₹70 per kg must be mixed with 3 kg of sugar…
Practise mixtures & alligation
Try a fresh set of mixtures & alligation questions with an explanation after every answer, free and without signing up: Mixtures & Alligation practice. Or sit a full placement mock test.
More mixtures & alligation questions
- Rice costing ₹40 per kg is mixed with rice costing ₹55 per kg in the ratio 2…
- In what ratio must tea costing ₹120 per kg be mixed with tea costing ₹180 per…
- A 60-litre mixture contains milk and water in the ratio 2 : 1. How much water…
- How many kg of sugar costing ₹70 per kg must be mixed with 3 kg of sugar…
- A container holds 40 litres of milk. 4 litres are taken out and replaced with…
- A milkman buys milk at ₹36 per litre. How much water should he add to 20…
- Equal weights of two alloys are melted together. In the first alloy gold and…
- A merchant has 1,000 kg of sugar. He sells part of it at 8% profit and the…
- A vessel is full of a mixture of milk and water in the ratio 5 : 3. What…
- Mixture A has milk and water in the ratio 3 : 1 and mixture B has them in the…
More quantitative aptitude practice
Time & Work · Pipes & Cisterns · Time, Speed & Distance · Problems on Trains · Boats & Streams · Permutation & Combination · Probability · Data Interpretation
LogicWiz Exams home · All practice topics · Placement mock tests · Daily 10 challenge