Question : If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is:

Question : A man covered a distance of 42 km in 5 hours. He covered part of the journey on foot at a speed of 6 km/h and part of the journey by bicycle at a speed of 10 km/h. How much distance did he walk on foot?

Question : A covered a distance of 240 km at a certain speed. Had his speed been 8 km/hr less, then the time taken would have been one hour more for covering the same distance. How much time (in hours) will he take to cover a distance of 480 km at his original speed?

Question : A man travels some distance at a speed of 12 km/hr and returns at a speed of 9 km/hr. If the total time taken by him is 2 hours and 20 minutes, the distance is:

Question : A student goes to school at a speed of $5 \frac{1}{2}$ km/hr and returns at a speed of 4 km/hr. If he takes $4 \frac{3}{4}$ hours for the entire journey, then the total distance covered by the student (in km) is: