SSC CGL/CHSL 2015:- MATHS

RATIO AND PROPORTION

1.If A:B = 3:2 B:C= 4:3 then A:B:C=?
A.6:4:3
B.3:2:3
C.3:4:3
D.3:2:1

2.Ratio between two numbers is 3:2 and their difference is 225, then the smaller number is:
A.90
B.675
c.135
D.450

3.If 2x = 3y = 4z, then x : y : z is :
A.4:3:2
B.6:3:4
C.3:4:2
D.6:4:3

4.The mean proportion between 9 & 36 is:
A.22.5
B.1 8
C.6
D.3 6

5.The fourth proportion to 3,6,15 is :
A.15
B.30
C.5
D.18

6.Two numbers are in the ratio 7:9. If 12 is subtracted from each of them, the ratio becomes 3:5. The product of the numbers is:
A.432
B.567
C.1575
D.1263

7.What must be added to each term of the ratio 7:13 so that the ratio becomes 2:3?
A.1
B.2
C.3
D.5

8.A total amount of Rs. 1800 is to be divided among A,B and C in such a way that half of A’s part, one third of B’s part and one- fourth of C’s part is equal. The A’s part is :
A.Rs.400
B.Rs.600
C.Rs.800
D.Rs.900

9.A sum of Rs. 53 is divided among A,B,C in such a way that A gets Rs. 7 more than B and B to gets Rs. 8 more than C.Then the ratio of their shares is :
A.10:18:25
B.18:25:10
C.25:18:10
D.15:18:20

10.The ratio of number of boys and girls in a school of 720 students is 7:5. How many more girls should be admitted to make the ratio 1:1?
A.90
B.120
C.220
D.240

11.The ratio of the number of boys and girls at a party was 1:2 but when 2 boys and 2 girls left,the ratio became 1:3.Then the number of persons initially in the party was :
A.24
B.36
C.12
D.15

12.A sum of Rs. 3400 has been divided among A,B and C in such a way that A gets of what B gets and B gets of what C gets.Then, B’s share is:
A.Rs.600
B.Rs.340
C.Rs.400
D.Rs.500

13.Two numbers are in the ratio 3:5, If 8 is subtracted from each, then they are in the ratio 1:3. Then, the second number is:
A.15
B.20
C.4
D.12

14.The proportion of copper and zinc in brass is 13:7. How much zinc will be there in 100 kg of brass?
A.20 kg
B.35 kg
C.45 kg
D.50 kg

15.The ratio of the father’s age to son’s age is 4:1. The product of their ages is 196. The ratio of their ages after 5 years will be:
A.3:1
B.10:3
C.11:4
D.14:5

16.The ages of Manoj and Amit are in the ratio 2:3. After 12 years, their ages will be in the ratio 11:15. The age of Amit is:
A.32 years
B.40 years
C.48 years
D.56 years

17.Rs.780 is divided among 2 men, 6 women and 8 boys so that the share of a man, a woman and a boy are in the ratio 3:2:1. Then, how much does a boy get?
A.Rs.130
B.Rs.60
C.Rs.240
D.Rs.40

18.The ratio between the annual incomes of A and B is 5:4 and between their expenditures is 4:3. If at the end of the year, A and B respectively save Rs. 400 and Rs. 500, then the income of A is:
A.Rs.4,000
B.Rs.3,200
C.Rs.3,700
D.Rs.4,800

19.A bag contains one rupee, 50 paise and 25 paise coins in the ratio 5:7:9. If the total amount in the bag is Rs. 430, find the number of coins of 25 paise.
A.200
B.280
C.360
D.300

20.A mixture contains milk and water in the ratio 3:2. If 4 liters of water is added to the mixture, milk and water in the mixture becomes equal. The quantity of milk in the mixture in liter is?
A.18
B.4
C.6
D.12

Answer

1. a

2. d

3. d

4. b

5. b

6. b

7. d

8. a

9. c

10. b

11. c

12. a

13. b

14. b

15. c

16. c

17. b

18. a

19. c

20. d