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today's question in aptitude 4 u

This is a discussion on today's question in aptitude 4 u within the Aptitude Questions forums, part of the Freshers Zone; In 100m race,Z runs at speed of 8kmph.If Z gives a start of 4m to y and stil beat him ...

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  #1  
Old 02-08-2010, 11:19 PM
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Exclamation today's question in aptitude 4 u

In 100m race,Z runs at speed of 8kmph.If Z gives a start of 4m to y and stil beat him by 15 secs.Y's speed=?

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  #2  
Old 02-19-2010, 12:27 PM
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Join Date: Sep 2009
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z's speed is 40/18 mps so he needs 45 secs for 100m.
as he starts when y at 4 but comes 15 secs b4 so
the taken by y for the 96m is 60 secs.
therefore, the speed of y is 5kmph.
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