If the ratio of the speed of a boat in downstream and the speed of the stream is 10:1. If the boat can travel 320 km upstream in 20 hours then find the total distance travelled (in km) by the boat in still water in the same time?
The velocity of a river is 2 km/hr. How much time is required to travel a boat in that river for 10 km. downstream them 10 km. upstream. Velocity of boat is 3 km/hr in still water.
A bus takes 1 hour 20 minutes more to travel a distance of 210 km, if its speed is reduced by 10 km/hr than actual speed. Find the time taken to cover a distance of 300 km at double the usual speed.
In a race of 1.6 km, if A allows B a start of 160 m and the ratio of the speeds of A and B is 10 :9, then who wins and by what margin?
