1] Passenger train and Freight train passing on parallel tracks. Passenger takes takes twice as much time to pass the freight train when moving in same direction and also teh same time when moving in the opp direction. How much faster is the passenger train than the freight train(ans: 3 times)2.One-third of the persons in front of me together with 3/4th of the persons behind me equals the total number of the persons in the merry go round. find the total number.

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Ponz

  • Apr 13th, 2006
 

For the second question,

Lets assume the no. on ppl in merry go around to be x.

no. of ppl in front of me is x-1. the same in the reverse diresction too.

so the equation is [(x-1)/3] + [3*(x-1)/4] =  x

solving for x,we get 13

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