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?
A and B take part in a 500 m race. A runs at 24 km per hour. A gives B a start of 40 m and still beats him by 15 seconds. What is the speed of B?
A and B take part in a 200 m race. A run at 5.4 km/hr. A gives B a start of 12 m and still beat him by 6 sec. What is the speed of B?
A and B run a km race. If A gives B a start of 100 m, A wins by 20 sec and if A gives B a start of 50 sec, B wins by 30 m. Then what is the time taken by A to run a km?
Train A whose length is four-fifth of that of train B crosses it traveling in opposite direction in a time which is 4/7th of the time taken by train A to cross it when traveling in same direction. Calculate the ratio of the speeds of train A and train B.
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?
