A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.
A 2 hours
B 3 hours
C 4 hours
D 5 hours
Solution
Correct Answer: Option C
Speed downstream = (13 + 4) km/hr = 17 km/hr Time taken to travel 68 km downstream = 68/17 hours = 4 hours
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