two trains for palwal leave kanpur at 10a.m and 10:30 am and travel at the speeds of 60 kmph and 75 kmph respectively. After how many kilometers from kanpur will the two trains be together?

• 150 km
  
  Let after time t hrs both the trains meet, then
  Distance travelled by train leaving at 10 am with speed 60 kmph in t hrs= Distance travelled by train leaving at 10:30 am with speed 75 kmph in t -½ hrs.
  => 60t = 75(t - ½)
  => 120t= 75(2t -1)
  => 30t= 75 or t=15/6 =2 ½
  So calculating distance travelled by either first or second train 60t or 75(t- ½) = 60* 2½= 150 km.
• 7 years agoHelpfull: Yes(1) No(2)