Question : The ratio of boys and girls in a college is 5 : 3. If 50 boys leave the college and 50 girls join the college, the ratio becomes 9 : 7. The number of boys in the college is:

Option 1: 300

Option 2: 400

Option 3: 500

Option 4: 600

Question : Directions: Study the bar diagram and answer the question.
Total number of boys and girls in five different departments of a college.

The respective ratio of the number of girls from the Philosophy department to the number of girls from the Psychology department is:

Option 1: 7 : 11

Option 2: 11 : 7

Option 3: 7 : 10 

Option 4: 6 : 11

Question : The pie chart given below shows the number of girls in six schools. The total number of girls in all these six schools is 5000. Number of girls in a particular school is shown as a percentage of total number of girls in all these six schools.

What is the ratio of the number of girls in school A to the number of girls in school E?

Option 1: 5 : 8

Option 2: 10 : 9

Option 3: 6 : 7

Option 4: 9 : 10

Question : If $x$ is prime number and $-1 \leq \frac{2x-7}{5} \leq 1$, then the number of values of $x$ is:

Option 1: 4

Option 2: 3

Option 3: 2

Option 4: 5

Question : The ratio of the ages of two boys is 5 : 6. After two years, the ratio will be 7 : 8. Determine the ratio of their ages after 12 years.

Option 1: $\frac{22}{24}$

Option 2: $\frac{15}{16}$

Option 3: $\frac{17}{18}$

Option 4: $\frac{11}{12}$