Tarun can cover a certain distance in 1 hr 24 min by covering 23 of the distance at 4 km/hr and the rest at 5 km/hr. The total distance is:
Raghavendra can cover a distance in 1 hr and 24 min by covering 2/3 of the distance at 4 kmph and the remaining at 5 kmph. Find the total distance covered by him.
Sarosh can cover a distance in 1hr 45 min by covering 23 of the distance at 8 kmph and the rest at 10 kmph. What is the total distance covered?
A boat covers a distance of 32 km upstream and 36 km downstream in 7 hours. It also covers a distance of 40 km upstream and 48 km downstream in 9 hours. Find the speed of the boat in still water and that of the stream.
An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. What speed it must attain to cover the same distance in 123 hours?