Question

2. If 120 is divided into 4 parts proportional to 2, 9, 4, 5, then the largest part is............
a) 82 b) 24 c) 54 d) 45

3. There are 80 teachers in a school of 3200 students. What is the ratio of the number of teachers to the number of students ?
a) 10 : 20 b) 20 : 10 c) 1 : 40 d) 40 : 1

4. Which of these pairs of ratios are equal ?
a) 3 : 4 and 75 : 10
b) 2 : 3 and 10 : 20
c) 5 : 1 and 100 : 20
d) 10 : 1 and 40 : 5

5. If 15% of x = 20% of y, then x : y is ..............
a) 3 : 4 b) 4 : 3 c) 17 : 16 d) 16 : 17

6. Which of the following ratios is greatest ?
a) 7: 15 b) 15 : 23 c) 17 : 25 d) 21 : 29

7. If 0.4 of a number is equal to 0.06 of another number, then the ratio of number is ................
a) 2 : 30
b) 3 : 20
c) 4 : 15
d) 1 : 20

8. The ratio of number of boys and girls is 4 : 3, If there are 18 girls in a class, then the number of boys in the class and the total number of students in the class are..................
a) 24, 42 b) 26, 46 c) 30, 32 d) 42, 30

9. Which of the following is not in inverse proportion?
a) The number of workers on a job and the time to complete the job.
b) Area of cultivated land and the crop harvested.
c) The time taken for a fixed journey and the speed of the vehicle.
d) The population of a country and the area of land per person.

10. There are 24 students and ratio of number of students to sweets is 1 : 5. If the number of the students is reduced by 4, then what is the ratio of student to student ?
a) 6 : 1 b) 3 : 1 c) 1: 3 d) 1 : 6​

Answer 1

Step-by-step explanation:

ANSWER

The total number of boys in school =1800

the total number of student =3200

therefore the total number of girls=3200−1800=1400

therefore the ratio of

boys

girls

=

1800

1400

ratio=7:9

Mark answer as brain list

follow me