Question

A Swimmer Walks 45km along the river's flow in 3 hours 45 minutes and walks 15km against the flow in 2 hours 30min. Find the speed of the boat in Still Water and the Speed of flow.

A 4km/h Correct Answer Incorrect Answer
B 5km/h Correct Answer Incorrect Answer
C 3km/h Correct Answer Incorrect Answer
D 6km/h Correct Answer Incorrect Answer

Solution

Let the speed of boat in still water =B and speed of stream =S then – ATQ- B-S =6             … (2) Solving (1) +(2) 2B =18 B=9km/h and S=3km/h.

Practice Next

Relevant for Exams:

×
×