D A river 2 km wide is flows at the rate of 2km h A boatman

Last updated: 6/25/2023

D A river 2 km wide is flows at the rate of 2km h A boatman who can row a boat at a speed of 4 km h in still water goes a distance of 2 km upstream and then comes back The time taken by him to complete his journey is 1 60 min 2 70 min 3 80 min 4 90 min