Question : The ratio of expenditure and savings of a person is 5 : 3. If the income increases by 20% and the expenditure increases by 10%, then the person's savings increase by:

Option 1: $36 \frac{2}{3}$%

Option 2: $3 \frac{1}{3}$%

Option 3: $13 \frac{2}{3}$%

Option 4: $30 \frac{1}{3}$%

Question : Find the HCF of $\frac{11}{25}, \frac{9}{20}, \frac{16}{15}$, and $\frac{10}{33}$.

Option 1: $\frac{1}{3300}$

Option 2: $\frac{1}{330}$

Option 3: $\frac{1}{33}$

Option 4: $\frac{1}{300}$

Question : In a school of 720 students, the ratio of boys to girls is 3 : 5. Find how many new boys may be allowed to the school if 18 new girls are admitted, so that the ratio of boys to girls changes to 2 : 3.

Option 1: 42

Option 2: 44

Option 3: 50

Option 4: 38

Question : The price of a car is first increased by 35% and after that, the price is decreased by 25% due to a reduction in sales. What is the net percentage change in the final price of the car?

Option 1: Decreases by $2 \frac{1}{5}$%

Option 2: Increases by $2 \frac{1}{3}$%

Option 3: Decreases by $1 \frac{3}{5}$%

Option 4: Increases by $1 \frac{1}{4}$%

Question : The ratio of the speeds of Aman, Kamal, and Manan is $4:5:6$, respectively. What is the ratio of the time taken by Aman, Kamal, and Manan, respectively, to cover the same distance?

Option 1: $10:12:15$

Option 2: $6:5:4$

Option 3: $4:5:6$

Option 4: $15:12:10$