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  • Two towns are 780 km apart. two super fast trains leave from both the towns at 3p.m toward each other at speeds of 120 km/h and 140 km/h. at what will they pass each other?

Two towns are 780 km apart. two super fast trains leave from both the towns at 3p.m toward each other at speeds of 120 km/h and 140 km/h. at what will they pass each other?

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 Solution:   Let the time taken be x hrs 

during this period  Train  A would cover  x*120 km

during this period train B  would cover   x*140 km

Then ,

  ⇒  x*120 + x*140 = 780  

⇒   x = 3

They will meet at 6 pm.  Ans

 

Posted by

Deependra Verma

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