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Interview Question

Proprietary Trader Interview Chicago, IL

A train travels a certain distance taking 7 hrs when going

  forward. While returning, train increases speed by 12km/hr and takes 5 hrs to return. What is the distance traveled?
Answer

Interview Answer

1 Answer

2

x=speed
7x=(x+12)*5
7x=5x+60
2x=60
x=30km/hr
30*7 = 210km

kevin on Apr 10, 2012

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