One half of the students in classes $\mathrm{I} \text{to} \mathrm{VIII}$ in a school are girls. $\frac{2}{5}$ of these are in classes $\mathrm{I} \text{to} \mathrm{V}$. What fraction of students are girls studying in classes $\mathrm{I} \text{to} \mathrm{V}$?

The simplest form of $\frac{273}{195}$ is…..?   

Which of the following relation is correct?

There are 10 boys and 10 girls in a group. After adding some boys to the group, the percentage of girls becomes 10%. How many boys were added.

Simplify: $\left(\frac{1}{9}+\frac{3}{5}\right)$$÷$$\left(\frac{2}{9}+\frac{2}{5}\right)$

(A)$\frac{31}{27}$

(B)$\frac{33}{28}$

(C)$\frac{7}{8}$

(D)$\frac{8}{7}$

$\frac{(a-b{)}^3+(b-c{)}^3+(c-a{)}^3}{3(a-b)(b-c)(c-a)}=?$

What is the value of above expression?

What will be the minimum value of $x$ so that  $\frac{55}{x-19}$ becomes a complete number?

A cake is distributed among 5 friends. Four of them get $\frac{1}{8}, \frac{1}{6}, \frac{5}{12}$ and $\frac{1}{12}$, and as shares. What part of the cake will be got by the fifth friend?

What is the fraction which is subtracted from$\frac{1}{2}$, the leaves $\frac{3}{4}$?

Arya, Abhimanyu, and Vivek shared lunch. Arya has brought two sandwiches, one made of vegetable and one of jam. The other two boys forgot to bring their lunch. Arya agreed to share his sandwiches so that each person will have an equal share of each sandwich.

How can Arya divide his sandwiches so that each person has an equal share?