A traveler walks a certain distance. Had he gone half a kilometer an hour faster, he would have walked it in 4/5 of the time, and had he gone half a Kilometer an hour slower, he would have walked 2 ½ hr longer. What is the distance?
a) 10 Km
b) 15 Km
c) 20 Km
d) Data Insufficient

Submitted by: Administrator
since the distance travelled is same

st=(s+0.5)(4/5)t

on solvin u will get s=2

there is one more equation

st=(s-0.5)(t+5/2)

substitute s=2 in the above eq and find 't' u will get s=2,t=7.5 therefore d=st=15km

ans:15km
Submitted by: Administrator

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