Ratios Questions

Roshan owned a plot of land having an area that was 20% more than the area of the plot owned by Susan, while the area of the plot of land owned by Jacob was 30% more than the area of the plot owned by Roshan. If the area of the plot owned by Susan was 1250 square feet, what was the area (in square feet) of the plot owned by Jacob?

If class A has 11 boys and 18 girls, class B has 13 boys and 17 girls, and class C has 20 boys and 9 girls, which class has the biggest ratio(s) of boys to girls?

Walking $\frac{3}{4}\text{th}$ of her normal speed, Athira is $15\text{ minutes}$ late in reaching her office. What is the usual time taken by her to cover the distance between her home and office?

$A$, $B$, and $C$ entered into a partnership business by investing $\text{Rs. }64000$, $\text{Rs. }52000$, and $\text{Rs. }36000$ respectively for a certain period of time. If $A$ receives $\text{Rs. }35584$ as annual profit, what amount will $C$ receive as his share in the profit?

Amal and Bimal started a business. Amal invested $\text{Rs. }500$ for $9$ months and Bimal invested some money for $6$ months. If they make a total profit of $\text{Rs. }69$ in a year and Bimal gets a profit share of $\text{Rs. }46$, the capital invested by Bimal in the business is: