Discussion
Home ‣ Aptitude ‣ Ratio and Proportion Comments
- Question
- If 0.8 x A = 0.09 x B, then find A : B.
Options- A. 9 : 80
- B. 3 : 80
- C. 80 : 9
- D. 7 : 80
- Correct Answer
- 9 : 80
ExplanationGiven that 0.8 x A = 0.09 x B
? A/B = 0.09/0.8 = 9/80
? A : B = 9 :80 - 1. If A = B/4 and B = C/2, then find the value of A : B : C?
Options- A. 8 : 4 : 1
- B. 4 : 2 : 1
- C. 1 : 4 : 8
- D. 1 : 2 : 4 Discuss
- 2. If P : Q : R = 2 : 3 : 4, then find P/Q : Q/R : R/P?
Options- A. 8 : 9 : 24
- B. 9 : 8 : 24
- C. 24 : 8 : 9
- D. 8 : 24 : 9 Discuss
- 3. If 30% of A = 20 % of B, then find the value of A : B?
Options- A. 1 : 3
- B. 3 : 2
- C. 3 : 1
- D. 2 : 3 Discuss
- 4. If a/7 = b/9 = c/11, then find a : b : c?
Options- A. 11 : 9 : 7
- B. 9 : 7 : 11
- C. 7 : 9 : 11
- D. 11 : 7 : 9 Discuss
- 5. If 4a = 5b and 7b = 9c, then a : b : c is equal to
Options- A. 45 : 36 : 28
- B. 44 : 33 : 28
- C. 28 : 36 : 45
- D. 36 : 28 : 45 Discuss
- 6. If 1/x : 1/y : 1/z = 2 : 3 : 5, then determine x : y : z .
Options- A. 6 : 15 : 10
- B. 3 : 15 : 10
- C. 15 : 3 : 10
- D. 15 : 10 : 6 Discuss
- 7. If a/3 = b/8, then ( a + 3 ) : ( b + 8 ) is equal to?
Options- A. 3 : 8
- B. 8 : 3
- C. 5 : 8
- D. 3 : 5 Discuss
- 8. If 1/2 of A = 2/5 of B = 1/3 of C, then A : B : C is equal to?
Options- A. 4 : 5 : 6
- B. 6 : 4 : 5
- C. 5 : 4 : 6
- D. 4 : 6 : 5 Discuss
- 9. If xy =36, then which of the following is correct?
Options- A. x : 9 = 4 : y
- B. 9 : x = 4 : y
- C. x :17 = y : 7
- D. x : 6 = y : 6 Discuss
- 10. The total number of students in school is 2140. If the number of girls in the school is 1200, then what is the ratio of the total number of boy to the total number of girls in the school?
Options- A. 26 : 25
- B. 47 : 60
- C. 18 : 13
- D. 31 : 79 Discuss
Ratio and Proportion problems
Search Results
Correct Answer: 1 : 4 : 8
Explanation:
Given that, A = B/4
? A/B = 1/4 or A : B = 1 : 4
Also, B = C/2 or B/C = 1/2 or B : C = 1 :2
Now, we have A : B = 1 : 4; B : C = 1 : 2
A : B : C = ( 1 x 1 ) : ( 1 x 4 ) : ( 2 x 4 )
= 1 : 4 : 8
Correct Answer: 8 : 9 : 24
Explanation:
Given that, P : Q : R = 2 : 3 : 4
Let P = 2K, Q = 3K, R = 4K
? P/Q = 2K/3K = 2/3,
Q/R = 3K/4K = 3/4,
R/P = 4K/2K = 2/1
? P/Q : Q/R : R/P = 2/3 : 3/4 : 2/1
= (2 x 12)/3 : (3 x 12)/ 4 : (2 x 12)/1
= (2 x 4) : (3 x 3) : 24
= 8 : 9 : 24
Correct Answer: 2 : 3
Explanation:
Given that, 30 % of A = 20 % of B
? A/B = 20/30 = 2/3
? A : B = 2 : 3
Correct Answer: 7 : 9 : 11
Explanation:
Let a/7 = b/9 = c/11 = K
Then, a = 7K, b = 9K, c = 11K
? a : b : c = 7K : 9K : 11K = 7 : 9 : 11
Correct Answer: 45 : 36 : 28
Explanation:
Given that 4a = 5b
? a/b = 5/4
Also 7b = 9c
? b/c = 9/7
? a : b = 5 : 4 = (5 x 9) : (4 x 9) = 45 : 36
and b : c = 9 : 7 = (9 x 4) : (7 x 4) = 36 : 28
? a : b : c = 45 : 36 : 28
Correct Answer: 15 : 10 : 6
Explanation:
Let 1/x = 2K, 1/y = 3K and 1/z = 5K
Then, x = K/2, Y = K/3 and z = K/5
? x : y : z = K/2 : K/3 : K/4
= 1/2 : 1/3 : 1/5
= 15 : 10 : 6
Correct Answer: 3 : 8
Explanation:
Let a/3 = b/8 = K
Then, a = 3K, b = 8K
? (a + 3) / (b + 8) = (3K + 3) / (8K + 8)
= [3( K + 1)] / [8(K+1)] = 3/8
? ( a + 3 ) : (b + 8) = 3 : 8
Correct Answer: 4 : 5 : 6
Explanation:
1/2 of A = 2/5 of B = 1/3 of C
1/2 x A = 2/5 x B = 1/3 x C
Let A/2 = 2B/5 = C/3 = K
Then, A = 2K, B = 5K/2, C = 3K
? A: B : C = 2k : 5k/2 : 3k
? A: B : C = 4 : 5 : 6
Correct Answer: x : 9 = 4 : y
Explanation:
xy =36
? xy = 4 x 9,
? x/9 = 4/y
? x : 9 = 4 : y
Correct Answer: 47 : 60
Explanation:
Number of boy = ( 2140 - 1200 ) = 940
? Boys : Girls = 940 : 1200 = 47 : 60
Comments
There are no comments.More in Aptitude:
Programming
Copyright ©CuriousTab. All rights reserved.