Q1. In what ratio must rice at ₹15/kg be mixed with rice at ₹25/kg so that the mixture costs ₹24/kg?
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Answer: C. 1:9
Ratio = (25 − 24) : (24 − 15) = 1:9.
Mixture and Alligation Questions for SSC CGL (with Answers)
13 Mixture and Alligation MCQs from the Quantitative Aptitude section, with answers and short explanations.
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Q2. In what ratio must rice at ₹30/kg be mixed with rice at ₹50/kg so that the mixture costs ₹40/kg?
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Answer: A. 1:1
Ratio = (50 − 40) : (40 − 30) = 10:10 = 1:1.
Q3. In what ratio must rice at ₹10/kg be mixed with rice at ₹20/kg so that the mixture costs ₹13/kg?
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Answer: B. 7:3
Ratio = (20 − 13) : (13 − 10) = 7:3.
Q4. In what ratio must rice at ₹10/kg be mixed with rice at ₹20/kg so that the mixture costs ₹11/kg?
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Answer: B. 9:1
Ratio = (20 − 11) : (11 − 10) = 9:1.
Q5. In what ratio must rice at ₹30/kg be mixed with rice at ₹50/kg so that the mixture costs ₹48/kg?
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Answer: A. 1:9
Ratio = (50 − 48) : (48 − 30) = 2:18 = 1:9.
Q6. In what ratio must rice at ₹40/kg be mixed with rice at ₹60/kg so that the mixture costs ₹48/kg?
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Answer: C. 3:2
Ratio = (60 − 48) : (48 − 40) = 12:8 = 3:2.
Q7. In what ratio must rice at ₹40/kg be mixed with rice at ₹60/kg so that the mixture costs ₹45/kg?
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Answer: D. 3:1
Ratio = (60 − 45) : (45 − 40) = 15:5 = 3:1.
Q8. In what ratio must rice at ₹30/kg be mixed with rice at ₹50/kg so that the mixture costs ₹34/kg?
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Answer: D. 4:1
Ratio = (50 − 34) : (34 − 30) = 16:4 = 4:1.
Q9. In what ratio must rice at ₹12/kg be mixed with rice at ₹18/kg so that the mixture costs ₹16/kg?
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Answer: A. 1:2
Ratio = (18 − 16) : (16 − 12) = 2:4 = 1:2.
Q10. In what ratio must rice at ₹40/kg be mixed with rice at ₹60/kg so that the mixture costs ₹57/kg?
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Answer: D. 3:17
Ratio = (60 − 57) : (57 − 40) = 3:17.
Q11. In what ratio must rice at ₹30/kg be mixed with rice at ₹50/kg so that the mixture costs ₹35/kg?
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Answer: B. 3:1
Ratio = (50 − 35) : (35 − 30) = 15:5 = 3:1.
Q12. In what ratio must rice at ₹10/kg be mixed with rice at ₹20/kg so that the mixture costs ₹19/kg?
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Answer: C. 1:9
Ratio = (20 − 19) : (19 − 10) = 1:9.
Q13. In what ratio must rice at ₹15/kg be mixed with rice at ₹25/kg so that the mixture costs ₹16/kg?
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Answer: B. 9:1
Ratio = (25 − 16) : (16 − 15) = 9:1.
More Quantitative Aptitude topics
- Speed, Time and Distance 69
- Percentage 58
- Average 56
- Profit and Loss 49
- Number System 47
- Mensuration 46
- Simple Interest 43
- Time and Work 41
- LCM and HCF 39
- Ratio and Proportion 38
- Problems on Ages 38
- Compound Interest 36
- Algebra 33
- Simplification 32
- Geometry 29
- Discount 24
- Partnership 17
- Boats and Streams 16
- Indices and Surds 10
- Trigonometry 10
- Statistics 9
- Pipes and Cisterns 7