Ratio and Proportion – Aptitude Questions and Answers

Ratio and Proportion – Aptitude Questions and Answers

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Ratio And Proportion Problems

Ratio And Proportion Problems:-

This is aptitude on Ratio And Proportion Problems Question and answers with explanation for different interviews and competitive and entrance exams.

1.What number has a 5:1 ratio to the number 10?
A. 42
B. 50
C. 55
D. 62
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Answer: Option B
Explanation:
5:1 = x: 10
x = 50

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2.If a: b = 7: 5, b: c = 9: 11, find a: b: c?
A. 63: 14: 55
B. 63: 45: 55
C. 14: 14: 15
D. 7: 14: 15

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Answer: Option B
Explanation:
a: b = 7: 5
b: c = 9: 11
a: b: c = 63: 45: 55

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3.The inverse ratio of 3: 2: 1 is?
A. 1:2:3
B. 2:3:1
C. 3:1:2
D. 2:3:6

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Answer: Option D
Explanation:
1/3: 1/2: 1/1 = 2:3:6

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4.The fourth proportional to 12, 14 and 18 is?
A. 21
B. 20
C. 22
D. 28/3

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Answer: Option A
Explanation:
(14*18)/12 = 21

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5.The ratio of two numbers is 2:3 and the sum of their cubes is 945. The difference of number is?
A. 3
B. 4
C. 5
D. 6

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Answer: Option A
Explanation:
2x   3x
8x cube + 27x cube = 945
35x cube = 945
x cube = 27 => x = 3

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6.A garrison of 400 men had a provision for 31 days. After 28 days 280 persons re-enforcement leave the garrison. Find the number of days for which the remaining ration will be sufficient?
A. 3 days
B. 8 days
C. 10 days
D. 6 days

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Answer: Option C
Explanation:
400 --- 31
400 --- 3
120 --- ?
400*3 = 120*x => x =10 days

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7.A sun is divided among X, Y and Z in such a way that for each rupee X gets, Y gets 45 paisa and Z gets 30 paisa. If the share of Y is RS. 27, what is the total amount?
A. Rs.90
B. Rs.105
C. Rs.96
D. Rs.120

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Answer: Option B
Explanation:
x:y:z = 100:45:30
            20:9:6
9 --- 27
35 --- ? => 105

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8.Rs.1170 is divided so that 4 times the first share, thrice the 2nd share and twice the third share amount to the same. What is the value of the third share?
A. Rs.260
B. Rs.270
C. Rs.360
D. Rs.540

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Answer: Option D
Explanation:
A+B+C = 1170
4A = 3B = 2C = x
A:B:C = 1/4:1/3:1/2 = 3:4:6
6/13 * 1170 = Rs.540

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9.In a bag there are coins of 50 paisa, 25 paisa and one rupee in the proportion 5:6:2. If there are in all Rs.42, the number of 25 paisa coins is?
A. 32
B. 42
C. 52
D. 60

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Answer: Option B
Explanation:
5x              6x           2x
50              25           100
250x + 150x + 200x = 4200
600x = 4200
x = 7 => 6x = 42

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10.The triplicate ratio of 1:2 is?
A. 8:1
B. 1:8
C. 2:1
D. 1:2

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Answer: Option B
Explanation:
13: 23 = 1:8

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Read More:

Problems on Average
Time and Work
H.C.F and L.C.M
Ratio and Proportion
Partnership Problems
Percentage Problems

 

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