Question

a steamer goes downstream and covers the distance between two ports in 4 hours .It covers the same distance in 5 hours when it goes upstream. If the steamer flows at 3 km per hour then find what is the speed of the steamer upstream​

Answer 1

Let the speed of the steamer in still water be x km/h.

Then, the speed downstream =(x+2) km/h

and the speed upstream =(x−2) km/h

Given, distance covered in 4 hours downstream = distance covered in 5 hours upstream

∴4(x+3)=5(x−3)

⇒4x+12=5x−15

⟹4x−5x=−12-15

⟹ x=27km/h