Unitary Method ...

A man rows downstream 20 km andupstream 12 km, taking 4 hours each time. What will be thevelocity of current?

Athis usual rowing rate, Rahul can travel 14 miles downstream in a certain riverin 7 hoursless than it takes him to travel the same distance upstream. But if he coulddouble his usual rowing rate for his 28 -mile round trip, the downstream 14 miles would then take only one hourless than the upstream 14 miles.What is the speed of the current in miles per hour?

A motorboat takes 2 hours to travel adistance of 12 km down the current and it takes 4 hours totravel the same distance against the current. What is the speed of the boat instill water in kmph?

The average speed of a train is 30% less onthe return journey than on the onward journey. The train halts for half an hourat the destination station before starting on the return journey. If the totaltime taken for the to and fro journey is 25 hours, covering a distance of 1200km, the speed of the train on the return journey is

A boat running downstream covers a distanceof 30 km in 3 hrs while it covers the same distanceupstream in 6 hrs. Then speed of the boat in still water is

Audi car crosses 6 stationsevery 20 minutes. how many stations will it pass in 1 hour?

A car travels 84 km in 2 hrs.The distance that can be travelled by the car in 4 hrs. is:

If a person travels 75 km in 5 hoursin a car, then the speed of the car is

A man makes a trip by automobile at an averagespeed of 60 km/hr. He returns over the same route at an average speed of 30km/hr. His average speed for the entire trip is:

Joseph travelled a distance of 30 km on his first trip. On a later trip, travelling twice times as fast, he covered 600 km. Compared with his time for the first trip, the time he took for the second was

A bike travelsa distance of 220 km at a constant speed. If the speed of the bike is increasedby 2 kmph, the journey would have taken 1 hours less. What is the speed of thebike?

A train which is moving at an average speedof 30 km/h, reaches its destination on time. When its average speedreduces to 25 km/h, then it reaches its destination 10 minuteslate. The distance travelled by the train is?

The speed of a bus is 48 km/hr. Howmuch distance will travel in 20 second?

How much time does it take to cover a distanceof 700 m at a speed of 63 km/hr?

A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?