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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Apr 3rd, 2006
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VIVEK

Apr 3rd, 2006

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

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

tweety
Profile Answers by tweety Questions by tweety

Apr 5th, 2006

(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).