A vehicle is to reach a certain place in 1 hr at 90 kmph. However it slows down on the way and reaches the destination at an average speed of 72 kmph. How much late is thevehicle?

15 mins.

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nitin sikri

  • Aug 7th, 2006
 

the prob is sol as d1=d2 1*90=x*72x=5/4late time=5/4-1=1/41/4*60=15 min

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