Prem walks 1 km from school to catch the bus from a nearby station and travels 3 km by bus and gets down and walks 1 km to reach home. What fraction of the total distance does Prem walk?
25
Total distance = 1+3+1 = 5 km
Total distance walked = 1+1 = 2 km
Fraction of the total distance walked by Prem = 25