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Q1. Mix 12 L of 50% acid solution with 12 L of 90% solution. Find final acid percentage.
Final % = (12x50+12x90)/(24) = 70%.
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Mixtures
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Q2. Mix 12 L of 50% acid solution with 8 L of 80% solution. Find final acid percentage.
Final % = (12x50+8x80)/(20) = 62%.
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Q3. A 20 L vessel is full of milk. 15 L milk is removed and replaced with water. What is milk percentage now?
Milk left = 5 L out of 20 L. Milk % = 5/20 x 100 = 25%.
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Q4. Mix 9 L of 20% acid solution with 9 L of 60% solution. Find final acid percentage.
Final % = (9x20+9x60)/(18) = 40%.
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Q5. Mix 9 L of 30% acid solution with 6 L of 60% solution. Find final acid percentage.
Final % = (9x30+6x60)/(15) = 42%.
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Q6. Mix 15 L of 20% acid solution with 15 L of 70% solution. Find final acid percentage.
Final % = (15x20+15x70)/(30) = 45%.
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Q7. Mix 12 L of 40% acid solution with 12 L of 90% solution. Find final acid percentage.
Final % = (12x40+12x90)/(24) = 65%.
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Q8. A shopkeeper mixes 9 kg tea at Rs. 33/kg with 5 kg tea at Rs. 145/kg. What is average cost per kg?
Average cost = (9x33+5x145)/(14) = 73.
Not Answered
Q9. A 20 L vessel is full of milk. 5 L milk is removed and replaced with water. What is milk percentage now?
Milk left = 15 L out of 20 L. Milk % = 15/20 x 100 = 75%.
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Q10. Mix 10 L of 40% acid solution with 15 L of 80% solution. Find final acid percentage.
Final % = (10x40+15x80)/(25) = 64%.
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Q11. A 25 L vessel is full of milk. 5 L milk is removed and replaced with water. What is milk percentage now?
Milk left = 20 L out of 25 L. Milk % = 20/25 x 100 = 80%.
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Q12. A 25 L vessel is full of milk. 20 L milk is removed and replaced with water. What is milk percentage now?
Milk left = 5 L out of 25 L. Milk % = 5/25 x 100 = 20%.
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Q13. A shopkeeper mixes 9 kg tea at Rs. 79/kg with 9 kg tea at Rs. 143/kg. What is average cost per kg?
Average cost = (9x79+9x143)/(18) = 111.
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Q14. A shopkeeper mixes 10 kg tea at Rs. 36/kg with 10 kg tea at Rs. 106/kg. What is average cost per kg?
Average cost = (10x36+10x106)/(20) = 71.
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Q15. A shopkeeper mixes 5 kg tea at Rs. 55/kg with 5 kg tea at Rs. 137/kg. What is average cost per kg?
Average cost = (5x55+5x137)/(10) = 96.
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Q16. A shopkeeper mixes 5 kg tea at Rs. 45/kg with 10 kg tea at Rs. 108/kg. What is average cost per kg?
Average cost = (5x45+10x108)/(15) = 87.
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Q17. A shopkeeper mixes 14 kg tea at Rs. 42/kg with 8 kg tea at Rs. 97/kg. What is average cost per kg?
Average cost = (14x42+8x97)/(22) = 62.
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Q18. A shopkeeper mixes 6 kg tea at Rs. 53/kg with 6 kg tea at Rs. 149/kg. What is average cost per kg?
Average cost = (6x53+6x149)/(12) = 101.
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Q19. A shopkeeper mixes 5 kg tea at Rs. 37/kg with 9 kg tea at Rs. 135/kg. What is average cost per kg?
Average cost = (5x37+9x135)/(14) = 100.
Not Answered
Q20. A shopkeeper mixes 15 kg tea at Rs. 61/kg with 9 kg tea at Rs. 133/kg. What is average cost per kg?
Average cost = (15x61+9x133)/(24) = 88.
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Mixtures Practice Questions with Answers
Build speed and accuracy with curated mixtures practice. Each quiz includes solved explanations, timed mode, and instant correctness feedback to help with placement tests and competitive exams.
How to prepare effectively for mixtures?
Start with daily timed sets, review every explanation, and note recurring mistake patterns for revision.
Are these mixtures questions useful for placements?
Yes. The format mirrors common aptitude screening rounds with objective questions and option-based answers.