UP POLICE MATHS QUIZ

Two cars are moving in the same direction of with their respective speed of 9 km/h and 5 km/h . Find the relative speed of first car with respect of second car.

Two train running in opposite directions on parallel track at speeds of $42 \mathrm{~km} / \mathrm{h}$ and $57 \mathrm{~km} / \mathrm{h}$, take $18 \mathrm{sec}$ to cross each other. If the length of the one train is $360$ m, then the length(in meter) of the other train is:-

Two trains A and B are running in the same direction at the uniform speeds of 80 km/h and 100 km/h, respectively. Train A leaves the station 30 min earlier than train B from the same station. The time taken by train B to cross train A will be

A train covers a distance in 12 h, if it runs at a speed of 75 km/h. Find the speed at which the train must run to decrease the time of journey by 3 h from the original time ?

The distance between a man and a 230 m long train is 115 m. How much time (in seconds) will the train, which is running at a speed of 60 km/h, take to pass the man who is running at a speed of 9 km/h towards the train?

If a 240 m long train crosses a 250 m long platform in 28 seconds, then what is the speed of the train (in km/h)?

A 253 m long train running at a speed of 60 km/h takes 42 seconds to cross a bridge. The length (in m) of the bridge is:

A 725 m long train passes a tunnel 235 m long in 48 sec. Find the speed of the train.