In what ratio must rice at ₹50/kg be mixed with rice at ₹80/kg so that the mixture costs ₹57/kg?
- A7 : 23
- B24 : 7
- C23 : 7
- D5 : 8
Show answer
Answer: (C) 23 : 7
By alligation, ratio = (80 − 57) : (57 − 50) = 23 : 7.
DRDO CEPTAM Mixture & Alligation Questions with Answers & Explanations
17 Mixture & Alligation questions from the Quantitative Ability section of DRDO CEPTAM, 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 ₹15/kg be mixed with rice at ₹25/kg so that the mixture costs ₹17/kg?
- A4 : 1
- B3 : 5
- C1 : 1
- D9 : 2
Show answer
Answer: (A) 4 : 1
By alligation, ratio = (25 − 17) : (17 − 15) = 4 : 1.
In what ratio must rice at ₹50/kg be mixed with rice at ₹80/kg so that the mixture costs ₹78/kg?
- A14 : 1
- B1 : 14
- C1 : 1
- D5 : 8
Show answer
Answer: (B) 1 : 14
By alligation, ratio = (80 − 78) : (78 − 50) = 1 : 14.
In what ratio must rice at ₹40/kg be mixed with rice at ₹60/kg so that the mixture costs ₹59/kg?
- A1 : 19
- B19 : 1
- C2 : 19
- D1 : 1
Show answer
Answer: (A) 1 : 19
By alligation, ratio = (60 − 59) : (59 − 40) = 1 : 19.
In what ratio must rice at ₹24/kg be mixed with rice at ₹36/kg so that the mixture costs ₹25/kg?
- A11 : 1
- B2 : 3
- C1 : 1
- D1 : 11
Show answer
Answer: (A) 11 : 1
By alligation, ratio = (36 − 25) : (25 − 24) = 11 : 1.
In what ratio must rice at ₹20/kg be mixed with rice at ₹30/kg so that the mixture costs ₹22/kg?
- A4 : 1
- B1 : 4
- C1 : 1
- D2 : 3
Show answer
Answer: (A) 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 ₹53/kg?
- A9 : 1
- B28 : 3
- C5 : 8
- D1 : 1
Show answer
Answer: (A) 9 : 1
By alligation, ratio = (80 − 53) : (53 − 50) = 9 : 1.
In what ratio must rice at ₹40/kg be mixed with rice at ₹60/kg so that the mixture costs ₹52/kg?
- A1 : 1
- B2 : 3
- C3 : 4
- D3 : 2
Show answer
Answer: (B) 2 : 3
By alligation, ratio = (60 − 52) : (52 − 40) = 2 : 3.
In what ratio must rice at ₹20/kg be mixed with rice at ₹30/kg so that the mixture costs ₹28/kg?
- A4 : 1
- B1 : 4
- C1 : 1
- D2 : 3
Show answer
Answer: (B) 1 : 4
By alligation, ratio = (30 − 28) : (28 − 20) = 1 : 4.
In what ratio must rice at ₹40/kg be mixed with rice at ₹60/kg so that the mixture costs ₹48/kg?
- A3 : 2
- B2 : 3
- C13 : 8
- D1 : 1
Show answer
Answer: (A) 3 : 2
By alligation, ratio = (60 − 48) : (48 − 40) = 3 : 2.
Ready for the real thing?
Timed Quantitative Ability test · 25 questions · instant rank
In what ratio must rice at ₹20/kg be mixed with rice at ₹30/kg so that the mixture costs ₹25/kg?
- A1 : 1
- B6 : 5
- C2 : 3
- D1 : 2
Show answer
Answer: (A) 1 : 1
By alligation, ratio = (30 − 25) : (25 − 20) = 1 : 1.
In what ratio must rice at ₹30/kg be mixed with rice at ₹45/kg so that the mixture costs ₹37/kg?
- A8 : 7
- B7 : 8
- C1 : 1
- D2 : 3
Show answer
Answer: (A) 8 : 7
By alligation, ratio = (45 − 37) : (37 − 30) = 8 : 7.
In what ratio must rice at ₹15/kg be mixed with rice at ₹25/kg so that the mixture costs ₹22/kg?
- A1 : 1
- B3 : 5
- C3 : 7
- D7 : 3
Show answer
Answer: (C) 3 : 7
By alligation, ratio = (25 − 22) : (22 − 15) = 3 : 7.
In what ratio must rice at ₹50/kg be mixed with rice at ₹80/kg so that the mixture costs ₹54/kg?
- A13 : 2
- B5 : 8
- C27 : 4
- D2 : 13
Show answer
Answer: (A) 13 : 2
By alligation, ratio = (80 − 54) : (54 − 50) = 13 : 2.
In what ratio must rice at ₹20/kg be mixed with rice at ₹30/kg so that the mixture costs ₹29/kg?
- A1 : 1
- B1 : 9
- C2 : 3
- D9 : 1
Show answer
Answer: (B) 1 : 9
By alligation, ratio = (30 − 29) : (29 − 20) = 1 : 9.
In what ratio must rice at ₹50/kg be mixed with rice at ₹80/kg so that the mixture costs ₹71/kg?
- A3 : 7
- B10 : 21
- C5 : 8
- D7 : 3
Show answer
Answer: (A) 3 : 7
By alligation, ratio = (80 − 71) : (71 − 50) = 3 : 7.
In what ratio must rice at ₹30/kg be mixed with rice at ₹45/kg so that the mixture costs ₹38/kg?
- A1 : 1
- B8 : 7
- C2 : 3
- D7 : 8
Show answer
Answer: (D) 7 : 8
By alligation, ratio = (45 − 38) : (38 − 30) = 7 : 8.
These are RankerClub practice questions written in the DRDO CEPTAM pattern. They are not official SSC/IBPS/RRB papers.
