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Boat & Stream
Q. A boat can travel 20 miles downstream in 2 hours. The return trip against the current takes 5 hours. What is the speed of the boat in still water, and what is the speed of the current ?
A) 12 mph & 10 mph
B) 5 mph & 8 mph
C) 10 mph & 5 mph
To solve this problem, we can use the formula: Speed = Distance / Time. Let’s denote the speed of the boat in still water as B and the speed of the current as C. From the given information, we have two equations:
• 20 = (B + C) * 2 (downstream trip)
• 20 = (B - C) * 5 (return trip) Solving these equations simultaneously, we find that B = 10 mph and C = 5 mph.
D) 10 mph & 14 mph
Discuss
