A boat sailing against a stream of river takes 6 hours to travel 24 kms, while sailing with the stream it takes 4 hours to travel the same distance. What is the speed of the stream?

A 1/2 km/hr
B 1 km/hr
C 2km/hr
D 1.5 km/hr

Correct Answer: 1 km/hr

Boat's speed + Stream's speed = 24/4 = 6 km/hrBoat's speed - Stream's speed = 24/6 = 4 km/hrDoing Subtraction,                                   2 *  Stream's speed = 2 km/hr                                     Stream's speed = 1 km/hr (Ans)
Bissoy MCQ
#গণিত #নৌকা ও স্রোত (Boat and stream) #Investment Corporation Of Bangladesh #Investment Corporation - Asst. Programar - 16.05.2008

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