A train is 125 m long. If the train takes 30 seconds to cross a tree by the railway line, then the speed of the train is:

A train running at a speed of 108 km / h crosses a pillar in 32 seconds. The length of the train (in meters) is:

The speed of two trains are in the ratio of 3:4. They are going in opposite directions along parallel tracks. If each takes 3 seconds to cross a telegraph post, find the time taken by the trains to cross each other completely?

Two train of length 100 meter and 80 meter respectively run on parallel lines of rails. When running in the same direction the faster train passed the slower one in 18 second, but when they are running in opposite directions with the same speed as earlier, they pass each other  in 9 seconds. Find the speed of each train.

A train passed by a man standing on the platform in 7 seconds and passed by the platform completely in 28 seconds. If the length of the platform is 330 metres, what is the length of the train?

The ratio of the radii of two wheels is 3: 4, then the ratio of their circumferences will be.

If $$ {\sqrt{3}\ CosA=SinA}$$ then what is the value of Cot A?

If $$ {sin\ θ\ cosec\  θ\over tan θ}=4 $$  then Find the value of tan θ ?