Question

A motor boat goes downstream and covers a distance in 4 hours while it covers
the same distance upstream in 5 hours. If the speed of the stream is 3 km/hr, find
the speed of the motor boat in still water.​

Answer 1

Step-by-step explanation:

UP. : DS

5. 4 ( TIME)

4. :. 5 ( speed)

still water = 4+5/2= 4.5

4.5 + 0.5= 5 downstream

3/0.5*4.5 = 27km/hr