general Maths Puzzle

Two trains each 1/6 mile in length run in opposite dirctions to each other with equal speed of 60 miles/hour. What is the time taken to completely cross over the two trains.

Read Solution (Total 1)

Total distance to be covered = 2*1/6 = 1/3 miles
relative speed = 60+60 = 120 mph

time taken = (1/3)/120 = 1/360 hrs = 60/360 mins= 1/6 mins = 10 secs
12 years agoHelpfull: Yes(0) No(1)

general Other Question

Find a six digit number that you can multiply by 9 and get a number with the original digits in reverse order? A train travels at a particular speed for a duration of one hour, after which one of its engine malfunctions reducing its speed to 3/5th of the actual speed before the occurrence of fault in engine. It travels at this speed for 2 hours to reach at its destination. If the fault had occurred 50 miles later on, the train would have reached its destination 45 minutes early. Find the distance traveled by the train.