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  • A train covered a certain distance at a uniform speed. If the train would have been 6 km/hr. faster, it would have taken 4 hours less than the scheduled time and if the train were slower by 6 km/hr., it would have taken 6 hrs. more than the scheduled t

A train covered a certain distance at a uniform speed. If the train would have been 6 km/hr. faster, it would have taken 4 hours less than the scheduled time and if the train were slower by 6 km/hr., it would have taken 6 hrs. more than the scheduled time. Find the length of the journey. 

 

 

 
 
 
 
 

Answers (1)

\\\frac{d}{x}-\frac{d}{x+6}=4.....(1)\\\\\frac{d}{x-6}-\frac{d}{x}=6.....(2)\\\text{divide (1) and (2)}\\we\ get\\6(x-6)=4(x+6)\\x=30\\d=720Km

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