Friday, February 2, 2007

"GRE MATH PROBLEM OF THE DAY"

At 10 a.m. two trains started traveling toward each other from stations 287 miles apart. They passed each other at 1:30 p.m. the same day. If the average speed of the faster train exceeded the average speed of the slower train by 6 miles per hour, which of the following represents the speed of the faster train, in miles per hour?
  1. 38
  2. 40
  3. 44
  4. 48
  5. 50

7 comments:

  1. please tell how to do this problem

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  2. the average relative speed of the trains is 287/3.5 = 82

    Let the speed of the slower train be x
    then relative speed = x + (x+6)
    or, 82 = 2x+6
    ==> x = 38
    hence speed of the faster train = x+6 = 44

    ReplyDelete
  3. YA CORRECT ANS IS C
    CONGRATS ZUBER KHAN UR EXPLAINATION IS ABSOLUTELY CORRECT

    ReplyDelete
  4. thank u zubr u r geneous u gve d correct trick for this questn.

    ReplyDelete