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Here is a question of speed ,time and distance... The speed of a motor boat itself is 20 km/h and the rate of flow of the river is 4 km/h. Moving with the stream the boat went 120 km. What distance will the boat cover during the same time going against the stream?
Relative speed towards the stream of a boat (20km/h+4km/h) X ( time)=120km time= 120/24 h time= 5 hrs now relative speed against stream (20-4)km/h X time = distance 16 km/h X 5 = distance 80 km
Relative speed towards the stream of a boat
(20km/h+4km/h) X ( time)=120km
time= 120/24 h
time= 5 hrs
now relative speed against stream
(20-4)km/h X time = distance
16 km/h X 5 = distance
80 km
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