A boat can travel with a speed of 13 km/hr in still water. If the speed of the s

Question

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.

Options:

A . 2 hours

B . 3 hours

C . 4 hours

D . 5 hours

Answer: Option C

Speed downstream = (13 + 4) km/hr = 17 km/hr.

Time taken to travel 68 km downstream = \(\left(\frac{68}{17}\right)hrs = 4hrs.\)

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