Question
Train P starts from Lucknow to Dehradun at 11:55 am with
an average speed of 55 m/s. Train Q starts from Dehradun to Lucknow at 1:35 pm with an average speed of 45 m/s. At what time the two trains will meet each other if the distance between Lucknow and Dehradun is 750 Km.Solution
Speed of train P = 55 × 18/5 = 198 Km/h Speed of train Q = 45 × 18/5 = 162 Km/h Distance travelled by train P till 1:35 pm = 198 × 5/3 = 330 Km Relative speed of trains = 198 + 162 = 360 Km/h Remaining distance to be travelled after 1:35 pm = 750 – 330 = 420 Km Time taken to cover 420 Km = 420/360 = 7/6 = 1 hours 10 minutes So the two trains will meet each other at 1:35 + 1:10 = 2:45 pm
Going 50 m to the South of her house, Priyanka turns left and goes another 45m. Then, turning to the North, she goes 20m and then starts walking to her ...
What is the distance between T and P?
Pole Q is 3 m to the west of pole D. Pole E is 6 m to the north of pole Q. Pole S is 5 m to the north of pole R which is 3 m to the west of pole E. In w...
What is the shortest distance between Z and V?
A man travels 25m towards the east and then turns 90° to his right and travels another 4 m. Finally, he turns right and covers 25 m. In which direct...
Two police buses start from same police base, 1st bus travels 11 km south, then turn to left and travel 19 km. 2nd bus travels 11 km west, then turns to...
What is the shortest distance between person N and person S?
Dev walked 25 metres towards East, took a right turn and walked 35 metres. Then he took a left turn and walked 40 metres. In which direction is he now ...
How many persons are standing to the east of S?Â
If Y # & M then Y is in with direction with respect to L ?