A stream engine can travel at 24 km/h without the train wagons. The reduction in speed of engine is directly proportional to the square root of the number of wagons. With 4 wagons the speed of engine is 20 km/h. Find the number of maximum wagons which an pull by the engine?

An engine can move at the speed of 20/3 m/s without any wagon attached and reduction in the speed of the train is directly proportional to the square root of the number of wagons attached to the engine. When there are 9 wagons attached its speed is 5 m/s. The greatest number of wagons with which the engine can move is :

The speed of a railway engine is 42 km/hr when no compartment is attached and the reduction in speed is directly proportional to the square root of the number of compartments attached. If the speed of the train carried by this engine is 24 km/hr with 9 compartments attached, the maximum number of compartments that the engine can pull is 35 b. 41 c. 48 d. none of these

An electric engine can run with speed of 36 km./hr . Without compartment .Decrease in speed of engine is directly proportional to no . Of compartments attached .It speed becomes 30 km/hr . When 9 compartments are attached . Find maximum number of compartment that engine can carry ?

A bus is moving with a uniform speed travelling a certain distance in a certain time. The speed of the bus is directly proportional to the distance travelled and inversely proportional to the square root of time. It travels is 60 km in 4 hours at a speed of 40 km/h. Then find how much distance will travel in 9 hours at a speed of 44 km/h?

Speed of train is inversaly proportional to the square root of time to cover a definite distance if it takes 4 hrs. travel with speed of 40 km/ hr , then what is time takes to cover same distance at speed of 60 km/hr?

Bus covers a certain distance at constant speed in certain time .Speed of bus is directly proportional to covered distance and inversely proportional to the square root of time taken by bus .If bus covers 60 km . In 4 hrs . At a speed of 40 km /hr then find distance travelled in 9 hrs . at speed of 44km./hr ?

Speed of train is inversaly proportional to the square root of time to cover a definite distance If it takes 4 hrs to travel with speed of 40 km./hr., then what is time takes to cover same distance at speed of 60 km./hr.?

When the speed of a boat in still water is 4 km/h and the rate of stream is 2 km/h, find upstream speed of the boat