Question

A boat takes 30 hours for travelling downstream from point A to point B and coming back to point C midway between A and B. If the velocity of the stream is 2 kmph and the speed of the boat in still water is 15 kmph, what is the distance between A and B?​

Answer 1

Answer:

Step-by-step eexplanation

Answer

Speed in downstream = (14 + 4) km/hr = 18 km/hr;

Speed in upstream = (144) km/hr = 10

km/hr.

Let the distance between A and B be x

km. Then,

→x/18 + (x/2)/10 = 19

→x/18 + x/20 = 19

⇒ x = 180 km.