A train overtakes two bikes which are travelling at the speed of 25km/hr and 30km/hr in the same direction the train is moving and crosses them in 18 and 21 seconds respectively. Then the length of the train is:
a)180m b)210 c)183 d)185

• Length of train is 175 m
• 12 years agoHelpfull: Yes(3) No(2)
• Let speed of train be x m/sec.
  Convert speed of the bikes in m/sec i.e 125/18 m/sec and 25/3 m/sec.
  Now by the condition given we can write (x-125/18)*18=(x-25/3)*21.
  Therefore x=50/3 m/sec.
  Now putting the value i.e lenght of train will be=(50/3-25/3)*21=175 meter.
• 12 years agoHelpfull: Yes(1) No(0)