## MCQ Questions for Class 6 Maths: Ch 12 Ratio and Proportion

1. The mean proportion of 9 and 16 is

(a) 16

(b) 9

(c) 12

(d) None of these

â–º (c) 12

2. If 12, 14, 9 and x are in proportion then find the value of x.

(a) 21

(b) 9

(c) 10.5

(d) 105

â–º (c) 10.5

3. What is the simplest form of the ratio 144:28?

(a) 28:4

(b) 36: 7

(c) 7:36

(d) 1:2

â–º (b) 36: 7

4. If 5, 30, 3 and x are in proportion then find the value of x.

(a) 24

(b) 6

(c) 18

(d) 15

â–º (c) 18

5. Identify the ratio of 4 seconds and 1/4 minute from the following.

(a) 4:15

(b) 1:4

(c) 15:4Â Â Â Â Â Â Â

(d) 1:16

â–º (a) 4:15

6. Which of the following is a proportion?

(a) 3,27,9,9

(b) 5,11,15,44

(c) 3,5,15,25

(d) 4,3,36,18

â–º (c) 3,5,15,25

7. Find the ratio of 81 to 108.

(a) it is 1:4

(b) it is 4:3

(c) it is 3:4

(d) None of these

â–º (c) it is 3:4

8. The length and width of a tape are 2 m and 28 cm. What is their ratio?

(a) 100:14

(b) 7:50

(c) 50:7

(d) 1:8

â–º (c) 50:7

9. If x : y : : y : z, identify the correct statement from among the following.

(a) xy = yz

(b) y

^{2}= xz
(c) xyz = x

(d) zy = x

â–º (b) y

^{2}Â = xz
10. Divide 20 pens between Sheela and Sangeeta in the ratio of 3:2.

(a) Sheela = 15 pens, Sangita = 5 pens

(b) Sheela = 8 pens, Sangita = 12 pens

(c) Sheela = 12 pens, Sangita = 8 pens

(d) None of these

â–º (c) Sheela = 12 pens, Sangita = 8 pens

11. The mean proportion of 4 and 16 is

(a) 5

(b) 4

(c) 8

(d) 6

â–º (c) 8

12. In a class, there are 20 boys and 40 girls. What is the ratio of the number of boys to the number of girls?

(a) it is 2:1

(b) it is 1:3

(c) it is 3:1

(d) it is 1:2

â–º (d) it is 1:2

13. Length of a room is 30 m and its breadth is 20 m. Find the ratio of length of the room to the breadth of the room.

(a) it is 2:3

(b) it is 3:2

(c) it is 1:3

(d) it is 1:2

â–º (b) it is 3:2

14. In a cricket coaching camp, 1200 children are trained out of which 900 are selected for various matches. What is the ratio of non-selected children to the total number of children?

(a) 300:120

(b) 4:1

(c) 1:4

(d) 120:300

â–º (c) 1:4

15. There are 45 persons working in an office. If the number of females is 25 and the remaining are males, find the ratio of the number of females to number of males.

(a) it is 1:5

(b) it is 1:4

(c) it is 4:5

(d) it is 5:4

â–º (d) it is 5:4

16. If 49, 35, x and 25 are in proportion then find the value of x.

(a) 25

(b) 15

(c) 12

(d) 35

â–º (d) 35

17. If 8, 18, 18 are x in proportion then find the value of x.

(a) 40.5

(b) 18

(c) 405

(d) 81

â–º (a) 40.5

18. 6 : 4 is equivalent ratio of ______.

(a) it is 3:2

(b) it is 2:3

(c) it is 1:2

(d) None of these

â–º (a) it is 3:2

19. If x, 24, 30 and 16 are in proportion then find the value of x.

(a) 30

(b) 45

(c) 15

(d) None of these

â–º (b) 45

20. Find the mean proportion of 25:10::10:4.

(a) 25

(b) 10

(c) 4

(d) 100

â–º (b) 10

21. Fill in the box so that the three numbers,32 and 64 are in proportion.

(a) 36

(b) 18

(c) 16

(d) 15

â–º (c) 16

22. If the cost of 6 cans of juice is Rs 210, then what will be the cost of 4 cans of juice?

(a) Rs 140

(b) Rs 280

(c) Rs 70

(d) None of these

â–º (a) Rs 140

23. What are the extremes of the proportion 9:3::36:12?

(a) 9, 3Â Â Â

(b) 36, 12

(c) 3, 36

(d) 9, 12

â–º (d) 9, 12

24. The first, second and the third terms of a proportion are 5,120 and 40. What is the fourth term?

(a) 89

(b) 480

(c) 960

(d) 98

â–º (c) 960