Question

A boat takes 19 hours for travelling downstream from point A to point B and coming back to a point C which is at midway between A and B. If the velocity of the stream is 4 kmph and the speed of the boat in still water is 14 kmph, what is the distance between A and B ? ​

Answer 1

Answer:

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your answer is here !

Step-by-step explanation:

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

Speed in upstream = (14 – 4) 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.

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