RRB - Ratio and Proportion - Aptitude Questions with Answer

1. If A:B=2:3, B:C = 4:5 and c:D = 6:7, then A:D is equal to:

1. 2:7
2. 7:8
3. 16:35*
4. 4:13

2. If 2A = 3B 4B = 5C, then A:C is:

1. 3:4
2. 8:15
3. 15:8*
4. 4:3

3. If A:B = 7:9 and B:C= 3.5, then A:B:C is:

1. 7:9:5
2. 21:35:45
3. 7:9:15*
4. 7:3:15

4. 0.6 of a number equals 0.09 of another number. The ratio of the number is:

1. 2:3
2. 1:15
3. 20:3
4. 3:20*

5. The ratio of two numbers is 3:4 and their sum is 420. The greater of the two numbers is:

1. 175
2. 200
3. 240*
4. 315

6. If a carton containing a dozen mirrors is dropped, which of the following cannot be the ratio of broke mirrors to unbroken mirrors?

1. 2:1
2. 3:1
3. 3:2*
4. 7:5

7. The third proportional to 0.8 and 0.2 is:

1. 0.4
2. 0.8
3. 0.05*
4. 0.032

8. What must be added to each term of the ration 7 : 13 so then the ratio becomes 2 : 3 ?

1. 1
2. 2
3. 3
4. 5

9. Out of the ratios 7 : 15, 15 : 23, 17 : 25 and 21 : 29, the smallest one is :

1. 17 : 25
2. 7 : 15*
3. 15 : 23
4. 21 : 29

10.If 2A=3B=4C then A:B:C is:

1. 2:3:4
2. 4:3:2*
3. 6:4:3
4. 3:4:6

11. If : then the value of x is :

1. 1.25
2. 1.5
3. 2.5
4. 2.25*

12. The weight of a 13 m long iron rod is 23.4 kg. The weight of 6 m long of such rod will be:

1. 7.2 kg
2. 12.4kg
3. 10.8 kg*
4. 18 kg

13. Two number are in the ratio 3:15 If each number is increased by 10, the ratio becomes 5:7. The numbers are:

1. 3.5
2. 7,9
3. 13.22
4. 15.25*

14. If 10% of x is the same as 20% y, then x:y is equal to:

1. 1:2*
2. 2:1
3. 5:1
4. 10:1

15. What must be added to each term of the ration 7 : 13 so then the ratio becomes 2 : 3 ?

1. 1
2. 2
3. 3
4. 5

16. What number should be subtracted from each of the numbers 54, 71, 75 and 99 so that the remainders may be proportional :

1. 1
2. 2
3. 3
4. 6

17. Three friends divide Rs. 624 among themselves in the ratio :: the share of the third friend is:

1. Rs.288
2. Rs. 192
3. Rs. 148
4. Rs. 144*

18. In a ration which is equal to 5 : 8, if the antecedent is 40, then consequent is :

1. 25
2. 64
3. 48
4. non of these*

19. The mean proportional between 0.32 and 0.02 is:

1. 0.34
2. 0.3
3. 0.16
4. 0.08*

20. What number should be added to each one of, 6, 14, 18, 38 to make it equally proportionate :

1. 1
2. 3
3. 4
4. 5

Answers:

* - marked value is answer.