A man can swim at the rate of 6 km/hr in still water. If the speed of the water is 3 km/hr, then the time taken by him to swim 15 km upstream is?
Answer & explanation
Correct answer: option 2
Upstream speed = 6 - 3 = 3 km/hr
Time taken to cover 15 km upstream = \(\frac{Distance}{speed}\)
= \(\frac{15}{3}\) = 5hr