If i walk with 30 miles/hr i reach 1 hour before and if i walk with 20 miles/hr i reach 1 hour late.Find the distance between 2 points and the exact time of reaching destination is 11 am then find the speed with which it walks.

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VIVEK

  • Apr 3rd, 2006
 

AS PER THE PROBLEM THE ANSWER IS TOTAL DISTANCE BETWEEN TWO POINTS IS 90 MILES.

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supraja

  • Apr 4th, 2006
 

120 miles.

if i walk 30 miles/hr i reach 1 hour before i.e

30(t-1) will give the exact distance

if  walk 20 miles per hour i reach 1 hour late i.e

20(t+1) will give the exact distance

equating the distances gives time taken i.e 5 hours

and the dis b/w them is 120 miles

and the speed is 24miles/hour

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(x/20)-(x/30)=1+1    //1hr late and 1 hr before//

then u get distance x =120miles....

and the speed at which it walks.....u consider the average speed then u get 24miles/hr......i.e.2xy/(x+y).

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Ankit Kamra

  • Apr 7th, 2006
 

as distance is constantspeed1 * time1=speed2 * time230 * (t-1) = 20 * (t+1)t=5distance == 120

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thamizh selvan

  • Apr 26th, 2006
 

 the distance between the places is 120 miles

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