A swimmer registers a pace track of 15 km downstream in 3 hours and handles 9 km upstream back in 3 hours. Find the net tracking speed of the current flow. MCQ with Answer and Explanation
A swimmer registers a pace track of 15 km downstream in 3 hours and handles 9 km upstream back in 3 hours. Find the net tracking speed of the current flow.
A. 1.5 km/h
B. 1.0 km/h
C. 1.2 km/h
D. 0.8 km/h
Answer: Option B
Solution (By JKSSB Mock Tests)
Downstream speed = 15 / 3 = 5 km/h. Upstream speed = 9 / 3 = 3 km/h. Speed of current flow = (5 - 3) / 2 = 2 / 2 = 1.0 km/h.
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