Ratio and Proportion
Ratio and Proportion - Important Points
| 1. | An amount of Rs.6240 is divided among A, B and C in the ratio 1/2 : 1/3 : 1/4. Find the share of C? |
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A. Rs.1280
B. Rs.1380
C. Rs.1400
D. Rs.1440
View Answer Discuss Work SpaceAnswer: option d
Explanation:
Ratio 1/2 : 1/3 : 1/4 = 6 : 4 : 3
C's share = (3/13) x 6240 = 1440
| 2. | If a : b = 2 : 5, then (5a + b) : (3a + 2b) is: |
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A. 15 : 19
B. 15 : 16
C. 12 : 17
D. 12 : 13
View Answer Discuss Work SpaceAnswer: option b
Explanation:
(5a + b) : (3a + 2b) = [(5 x 2) + 5] / [(3 x 2) + (2 x 5)] = 15 : 16
| 3. | If A : B = 4 : 7, B : C = 3 : 4, C : D = 7 : 11, then A : D is: |
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A. 3 : 7
B. 3 : 11
C. 7 : 22
D. 7 : 9
View Answer Discuss Work SpaceAnswer: option b
Explanation:
| 4. | The ratio of the ages of A and B is 4/3 : 5/4. By what percent is A’s age more than that of B? |
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A. (3) 1/3
B. 5
C. (6) 2/3
D. (7) 1/7
View Answer Discuss Work SpaceAnswer: option c
Explanation:
Percent more = [(4/3) - (5/4)]/(5/4) x 100 = (1/12)/(5/4) x 100 = 100/15 = (6) 2/3 %
| 5. | The ratio of the number of boys and girls in a school is 14 : 16. If the percentage increase in the number of boys and girls be 20% and 10% respectively, the new ratio becomes: |
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A. 8 : 9
B. 17 : 18
C. 21 : 22
D. 19 : 20
View Answer Discuss Work SpaceAnswer: option c
Explanation:
Initial ratio = 7 : 8
New ratio = 8.4 : 8.8 = 21 : 22
Ratio and Proportion Questions and Answers FAQ
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