9th mathematics Chapter14 Ratio and Proportion
| Sr # | Questions | A | B | C | D |
|---|---|---|---|---|---|
| 1 | If the ratio of the areas of two squares is 4:9, what is the ratio of their side lengths? | 2:3 | 3:2 | 4:9 | 9:4 | 2 | If the ratio of the lengths of two sides of a rectangle is 3:4 and the perimeter is 28 cm, what is the length of the shorter side? | 6 cm | 8 cm | 10 cm | 12 cm | 3 | If a:b = 8:9 and b:c = 5:7, what is the value of a:b:c? | 40:45:63 | 20:25:35 | 32:36:49 | 16:18:25 | 4 | If 5x:8y = 10:16, what is the value of x:y? | 2:3 | 3:4 | 4:5 | 5:6 | 5 | If x:y = 2:3 and y:z = 5:7, what is the value of x:z? | 2:5 | 4:7 | 6:9 | 8:11 | 6 | If the ratio of the angles in a triangle is 2:3:4, what is the measure of the smallest angle? | 30 degrees | 40 degrees | 50 degrees | 60 degrees | 7 | The ratio of the volumes of two cubes is 1:8. What is the ratio of their side lengths? | 1:2 | 1:4 | 1:6 | 1:√2 | 8 | If a:b = 5:7, and b:c = 2:3, what is the ratio a:c? | 5:6 | 10:21 | 5:9 | 15:21 | 9 | If 2x:3y = 8:12, what is the value of x:y? | 2:3 | 3:4 | 4:5 | 5:6 | 10 | If a:b = 7:9 and b:c = 4:5, what is the value of a:c? | 14:15 | 21:20 | 28:35 | 35:36 | 11 | The ratio of the number of students who passed to the number of students who failed in an exam is 5:2. If there are 49 students in total, how many students passed? | 28 | 35 | 40 | 45 | 12 | The ratio of the ages of two persons is 5:8. If the older person is 40 years old, how old is the younger person? | 16 years | 20 years | 25 years | 32 years | 13 | What is the simplified form of the ratio 4:6? | 1:2 | 2:3 | 2:1 | 3:4 | 14 | If a:b = 2:3 and b:c = 3:5, what is the value of a:b:c? | 2:3:5 | 4:9:15 | 6:10:15 | 8:12:20 | 15 | The sum of three consecutive integers is 72. What is the ratio of the integers? | 3:4:5 | 4:5:6 | 5:6:7 | 6:7:8 | 16 | The sum of two numbers is 45, and their ratio is 3:4. What are the numbers? | 15, 30 | 18, 27 | 20, 25 | 24, 21 | 17 | If a:b = 2:5 and b:c = 3:4, what is the ratio a:c? | 6:20 | 4:10 | 8:15 | 6:9 | 18 | If 2x:3y = 4:5, what is the value of x:y? | 2:3 | 3:2 | 4:5 | 5:4 | 19 | If 3x:5y = 9:15, what is the value of x:y? | 1:2 | 2:3 | 3:4 | 4:5 | 20 | The ages of A and B are in the ratio 4:7. If the sum of their ages is 99, how old is B? | 36 | 49 | 63 | 77 | 21 | The ratio of boys to girls in a class is 3:2. If there are 25 students in the class, how many girls are there? | 10 | 15 | 20 | 25 | 22 | If a:b = 3:4 and b:c = 6:7, what is the value of a:b:c? | 9:12:14 | 18:24:28 | 27:36:42 | 36:48:56 | 23 | If 4x:5y = 16:20, what is the value of x:y? | 1:2 | 2:3 | 3:4 | 4:5 | 24 | The ratio of the lengths of two sides of a triangle is 5:8. If the shorter side is 15 cm, what is the length of the longer side? | 20 cm | 24 cm | 30 cm | 40 cm | 25 | The ratio of the number of boys to the number of girls in a class is 2:3. If there are 40 students in the class, how many boys are there? | 10 | 12 | 15 | 20 |