Discussion
Home ‣ Aptitude ‣ Ratio and Proportion Comments
- Question
- If 2A = 3B and 4B = 5C, then A : C is?
Options- A. 3 : 4
- B. 8 : 15
- C. 15 : 8
- D. 4 : 3
- Correct Answer
- 15 : 8
Explanation? 2A = 3B and 4B = 5C
? 8A = 12B and 12B = 15C
? 8A = 12B = 15C = x
? A = x/8, B = x/12, C = x/15
So, A : C = x/8 : x/15 = 15 : 8 - 1. If a : b = 2 : 3 and 2 : a =1 : 2, then the value of 'b' is?
Options- A. 4
- B. 6
- C. 1 / 3
- D. 3 / 2 Discuss
- 2. The ratio which (1/3 of Rs. 9.30) bears to (0.6 of Rs. 1.55) is?
Options- A. 1 : 3
- B. 10 : 3
- C. 3 : 10
- D. 3 : 1 Discuss
- 3. If one-third of A, one-fourth of B and one-fifth of C are equal, then A : B : C is?
Options- A. 3 : 4 : 5
- B. 4 : 3 : 5
- C. 5 : 4 : 3
- D. 1/3 : 1/4 :1/5 Discuss
- 4. If 1/5 : 1/N = 1/N : 1/1.25, then the value of N is?
Options- A. 1.25
- B. 1.5
- C. 2.5
- D. 2.25 Discuss
- 5. Out of the ratio 7 : 15, 15 : 23, 17 : 25 and 21 : 29 the smallest one is?
Options- A. 17 : 25
- B. 7 : 15
- C. 15 : 23
- D. 21 : 29 Discuss
- 6. If 2A = 3B = 4C , then A : B : C is?
Options- A. 2 : 3 : 4
- B. 4 : 3 : 2
- C. 6 : 4 : 3
- D. 3 : 4 : 6 Discuss
- 7. If A : B = 2 : 3, B : C = 4 : 5 and C : D = 6 : 7, then A : D is equal to?
Options- A. 2 : 7
- B. 7 : 8
- C. 16 : 35
- D. 4 : 13 Discuss
- 8. If A = B/3 and B = C/2, then A : B : C is?
Options- A. 1 : 3 : 6
- B. 2 :3 : 6
- C. 3 : 2 : 6
- D. 3 :1 :2 Discuss
- 9. If A : B = 5 : 7 and B : C = 6 : 11, then A : B : C is?
Options- A. 55 : 77 : 66
- B. 30 : 42 : 77
- C. 35 : 49 : 42
- D. None of these Discuss
- 10. If A : B = 7 : 9 and B : C = 3 : 5 then A : B : C is?
Options- A. 7 : 9 : 5
- B. 21 : 35 : 45
- C. 7 : 9 : 15
- D. 7 : 3 : 15 Discuss
Ratio and Proportion problems
Search Results
Correct Answer: 6
Explanation:
? a / b = 2/3 and 2 / a = 1/2
? a/b x 2/a = 2/3 x 1/2
? 2/b = 1/3
? b = 6
Correct Answer: 10 : 3
Explanation:
Req. ratio = (1/3 of Rs. 9.30) / (0.6 of Rs. 1.55)
= 3.10 / 0.93
= 310 / 93
= 10 / 3
Correct Answer: 3 : 4 : 5
Explanation:
? 1/3 A = 1/4, B = 1/5, C = x
Then, A = 3x, B = 4x and C = 5x
? A : B : C = 3x : 4x : 5x = 3 : 4 : 5
Correct Answer: 2.5
Explanation:
Given 1/5 : 1/N = 1/N : 1/1.25
? 1/5 x 1/1.25 = 1/N x 1/N
? N2 = 5 x 1.25 = 6.25
? N = 2.5
Correct Answer: 7 : 15
Explanation:
7 : 5 = 7/15 = 0.466
15 : 23 = 15/23 = 0.652
17 : 25 = 17/25 = 0.68
and 21 : 29 = 0.724
? The smallest one is 7 : 15.
Correct Answer: 6 : 4 : 3
Explanation:
Let 2A = 3B = 4C = x
Then A = x/2, B = x/3 and C = x/4
? A : B : C = x/2 : x/3 : x/4
Hence A : B : C = 6 : 4 : 3
Correct Answer: 16 : 35
Explanation:
? A/D = (A/B) x (B/C) x (C/D) = (2/3) x (4/5) x (6/7) = 16/35
? A : D = 16 : 35
Correct Answer: 1 : 3 : 6
Explanation:
Let A = x
Then B = 3x, C = 2B = 6x
&there4 A : B : C = x : 3x : 6x = 1 : 3 : 6
Correct Answer: 30 : 42 : 77
Explanation:
L.C.M. of 7 and 6 is 42
? A : B = 5 : 7 = 30 : 42
and B : C = 6 : 11 = 42 : 77
Hence A : B : C = 30 : 42 : 77
Correct Answer: 7 : 9 : 15
Explanation:
A : B = 7
and B : C = 3 : 5 = 9 : 15
? A : B : C = 7 : 9 : 15
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