A motorboat tracks 48 km downstream in 3 hours and handles the same route upstream back to the origin line in 6 hours. Find the baseline speed of the boat hull in still water. MCQ with Answer and Explanation
A motorboat tracks 48 km downstream in 3 hours and handles the same route upstream back to the origin line in 6 hours. Find the baseline speed of the boat hull in still water.
A. 12 km/h
B. 15 km/h
C. 10 km/h
D. 14 km/h
Answer: Option A
Solution (By JKSSB Mock Tests)
Downstream speed = 48 / 3 = 16 km/h. Upstream speed = 48 / 6 = 8 km/h. Speed in still water = (16 + 8) / 2 = 12 km/h.
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