⟩ 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 Kmb) 15 Kmc) 20 Kmd) Data Insufficient
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