Question : There are 1400 students in a school, 25% of them wear spectacles and $\frac{2}{7}$th of those wearing spectacles are boys. How many girls in the school wear spectacles?

Option 1: $250$

Option 2: $100$

Option 3: $200$

Option 4: $300$

Question : $6\frac{1}{4}$% of 1600 + $12\frac{1}{2}$% of 800 equals:

Option 1: 100

Option 2: 200

Option 3: 300

Option 4: 400

Question : When $2x+\frac{2}{x}=3$, then the value of ($x^3+\frac{1}{x^3}+2)$ is:

Option 1: $\frac{2}{7}$

Option 2: $\frac{7}{8}$

Option 3: $\frac{7}{2}$

Option 4: $\frac{8}{7}$

Question : In a class, there are $z$ students. Out of them, $x$ are boys. What part of the class is composed of girls?

Option 1: $\frac{x}{z}$

Option 2: $\frac{z}{x}$

Option 3: $1–\frac{x}{z}$

Option 4: $\frac{x}{z}–1$

Question : The ratio of the number of boys to that of girls in a school is 11 : 15. If there are 200 more girls than boys, what is the number of boys in that school?

Option 1: 550

Option 2: 750

Option 3: 506

Option 4: 605

Question : In a school, there were 1554 students, and the ratio of boys to girls was 4 : 3. After a few days, 30 girls joined the school but a few boys left. As a result, the ratio of boys and girls became 7 : 6. The number of boys who left the school is:

Option 1: 76

Option 2: 74

Option 3: 84

Option 4: 86