A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will it take to go 5 km in stationary water?
- A. 40 minutes
- B. 1 hour
- C. 1 hr 15 min
- D. 1 hr 30 min
✅ Correct Answer: 1 hr 15 min
Explanation
Rate downstream=1/(10)x 60 Rate upstream=2 km/hr. Speed in still water=1/(2)[https://www.indiabix.com/_files/images/aptitude/1-sym-tfr.gif] Required time=5/(4)hrs=1 hr 15 min.
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