A train running at a certain speed crosses another train running in the opposite direction in 4.8 seconds. to find out the speed of the first train , which of the following information P and Q is sufficient ?
P : Then length of the first train Q : The length of the second train
A train running at a certain speed crosses a stationary engine in 20 seconds . to fine out the speed of the train which of the following information is necessary ?
Two trains, one from Howrah to Patna and the other from Patna to Howrah , start simultaneously . After they meet , the trains reach their destinations after 9 hours and 16 hours. respectively . The ratio of heir speeds is :
A train X starts from Meerut at 4 p.m. and reaches Ghaziabad at 5 p.m. while anther rain y starts from Ghaziabad at 4 p.m. and reaches Meerut at 5.30 p.m. The two trains will cross each other at
Two stations A and B are 110 km apart on a straight line One train starts from A at 7 a.m and travels towards B at 20 kmph , Anther train starts from B at 8 a.m. and travels towards A at a speed of 25 kmph . At what time will they meet ?