A motor boat takes 2 hours to travel a distance of 9 km downstream and it takes 6 hours to travel the same distance agai…

A train is moving with the speed of 180 km/hr. Its speed (in metres per second) is :

Two trains start from the same point simultaneously and in the same direction. The first train travels at 40 km /h, and …

A ship, 40 kilometres from the shore, springs a leak which admits $$3\frac{3}{4}$$ tonnes of water in 12 minutes. 60 ton…

A car travelling with $$\frac{5}{7}$$ of its usual speed covers 42 km in 1 hr 40 min 48 sec. What is the usual speed of …

The average speed of a train is 20% less on the return journey than on onward journey. The train halts for half an hour …

A motor car does a journey in 17.5 hours, covering the first half at 30 km/h and the second half at 40 km/h. Find the di…

The speed $$3\frac{1}{3}$$ m/sec when expressed in km/hr becomes :