In what ratio must rice at ₹30/kg be mixed with rice at ₹45/kg so that the mixture costs ₹37/kg?
- A8 : 7
- B2 : 3
- C9 : 7
- D1 : 1
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Answer: (A) 8 : 7
By alligation, ratio = (45 − 37) : (37 − 30) = 8 : 7.
SSC CGL Mixture & Alligation Questions with Answers & Explanations
15 Mixture & Alligation questions from the Quantitative Aptitude section of SSC CGL, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.
In what ratio must rice at ₹20/kg be mixed with rice at ₹30/kg so that the mixture costs ₹29/kg?
- A2 : 3
- B1 : 9
- C9 : 1
- D2 : 9
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Answer: (B) 1 : 9
By alligation, ratio = (30 − 29) : (29 − 20) = 1 : 9.
In what ratio must rice at ₹40/kg be mixed with rice at ₹60/kg so that the mixture costs ₹52/kg?
- A3 : 4
- B2 : 3
- C3 : 2
- D1 : 1
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Answer: (B) 2 : 3
By alligation, ratio = (60 − 52) : (52 − 40) = 2 : 3.
In what ratio must rice at ₹15/kg be mixed with rice at ₹25/kg so that the mixture costs ₹24/kg?
- A9 : 1
- B3 : 5
- C1 : 9
- D2 : 9
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Answer: (C) 1 : 9
By alligation, ratio = (25 − 24) : (24 − 15) = 1 : 9.
In what ratio must rice at ₹20/kg be mixed with rice at ₹30/kg so that the mixture costs ₹22/kg?
- A2 : 3
- B4 : 1
- C1 : 4
- D1 : 1
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Answer: (B) 4 : 1
By alligation, ratio = (30 − 22) : (22 − 20) = 4 : 1.
In what ratio must rice at ₹50/kg be mixed with rice at ₹80/kg so that the mixture costs ₹51/kg?
- A1 : 29
- B5 : 8
- C29 : 1
- D30 : 1
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Answer: (C) 29 : 1
By alligation, ratio = (80 − 51) : (51 − 50) = 29 : 1.
In what ratio must rice at ₹40/kg be mixed with rice at ₹60/kg so that the mixture costs ₹59/kg?
- A2 : 3
- B1 : 19
- C2 : 19
- D19 : 1
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Answer: (B) 1 : 19
By alligation, ratio = (60 − 59) : (59 − 40) = 1 : 19.
In what ratio must rice at ₹20/kg be mixed with rice at ₹30/kg so that the mixture costs ₹24/kg?
- A1 : 1
- B2 : 3
- C3 : 2
- D7 : 4
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Answer: (C) 3 : 2
By alligation, ratio = (30 − 24) : (24 − 20) = 3 : 2.
In what ratio must rice at ₹50/kg be mixed with rice at ₹80/kg so that the mixture costs ₹52/kg?
- A1 : 1
- B1 : 14
- C29 : 2
- D14 : 1
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Answer: (D) 14 : 1
By alligation, ratio = (80 − 52) : (52 − 50) = 14 : 1.
In what ratio must rice at ₹24/kg be mixed with rice at ₹36/kg so that the mixture costs ₹26/kg?
- A1 : 5
- B1 : 1
- C5 : 1
- D2 : 3
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Answer: (C) 5 : 1
By alligation, ratio = (36 − 26) : (26 − 24) = 5 : 1.
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In what ratio must rice at ₹24/kg be mixed with rice at ₹36/kg so that the mixture costs ₹27/kg?
- A10 : 3
- B3 : 1
- C1 : 1
- D2 : 3
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Answer: (B) 3 : 1
By alligation, ratio = (36 − 27) : (27 − 24) = 3 : 1.
In what ratio must rice at ₹24/kg be mixed with rice at ₹36/kg so that the mixture costs ₹28/kg?
- A2 : 3
- B1 : 1
- C1 : 2
- D2 : 1
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Answer: (D) 2 : 1
By alligation, ratio = (36 − 28) : (28 − 24) = 2 : 1.
In what ratio must rice at ₹24/kg be mixed with rice at ₹36/kg so that the mixture costs ₹34/kg?
- A1 : 1
- B2 : 3
- C5 : 1
- D1 : 5
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Answer: (D) 1 : 5
By alligation, ratio = (36 − 34) : (34 − 24) = 1 : 5.
In what ratio must rice at ₹40/kg be mixed with rice at ₹60/kg so that the mixture costs ₹54/kg?
- A7 : 3
- B1 : 1
- C1 : 2
- D3 : 7
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Answer: (D) 3 : 7
By alligation, ratio = (60 − 54) : (54 − 40) = 3 : 7.
In what ratio must rice at ₹20/kg be mixed with rice at ₹30/kg so that the mixture costs ₹27/kg?
- A2 : 3
- B1 : 1
- C4 : 7
- D3 : 7
Show answer
Answer: (D) 3 : 7
By alligation, ratio = (30 − 27) : (27 − 20) = 3 : 7.
These are RankerClub practice questions written in the SSC CGL pattern. They are not official SSC/IBPS/RRB papers.
